When Cao Pi, King of Wei, usurped the throne from Emperor Xian, the Han Dynasty ceased to exist.

When he dies his son Cao Pi succeeds to the throne and proclaims himself emperor of Wei.

When an all-out war was about to break out, the news that Cao Cao planned to attack Hanzhong was received by Liu Bei, and he requested for a border treaty with Sun Quan as he became worried about Cao Cao seizing Hanzhong.

When Hua Tuo was sentenced to death after incurring the wrath of Cao Cao, who controlled the Imperial Court, the physician tried to entrust the text to his gaoler.

When Cao Cao inquired the reason, Guan Yu replied, " Sir, I'm very grateful to you for the steed because with it, I can reach my sworn brother in a shorter period of time if I ever know where he is.

When he saw the plight of Cao Cao's defeated troops and Zhang Liao, whom he befriended when he serving Cao earlier, he decided to allow Cao and his men to leave.

When Cao Cao opened the box containing Guan Yu's head, he saw that Guan's facial expressions resembled that of a living person.

When Cao Cao was leading a campaign against Tao Qian, the governor of Xu Province ( 徐州 ; covering present-day northern Jiangsu ) whom Cao accused of killing his father, Xiahou Dun was left with the responsibility of defending Yan Province.

When Cao Cao learned of the rebellion, he hastily returned and laid siege on Lü Bu in Puyang.

When Guan Yu surrendered to Cao Cao after Liu Bei was defeated at Xu Province, Xiahou Dun was one of those sceptical of Guan.

When Cao Song went to see his son, Cao Cao behaved normally.

When the Confederate attempt to defend Petersburg failed, the Confederate army retreated but was pursued and defeated, which resulted in Lee's surrender to Grant at Appomattox Court House on April 9, 1865.

When Chiang was defeated by CPC forces in mainland China in 1949, he retreated to Taiwan with his government and his most disciplined troops, along with most of the KMT leadership and a large number of their supporters ; Chiang Kai-shek had taken effective control of Taiwan at the end of WWII as part of the overall Japanese surrender, when Japanese troops in Taiwan surrendered to Republic of China troops.

When Callicratidas attacked him, Conon retreated to Mytilene, where he was blockaded by Callicratidas ’ Spartan fleet.

When the militant prelates of York and Durham together with the Earl of Northumberland took their forces into the marches to relieve the fortress, the Scots swiftly retreated — a chronicle written a year later said that the Scots ' had fled wretchedly and ignominiously '— but the effects and the manner of the defeat and the loss of their expensive artillery was a major reversal for James both in terms of foreign policy and internal authority.

When it became apparent that his supporters were not going to be able to return to Virginia, Dunmore retreated to New York.

When the Jacobites retreated across the border to Scotland they left a garrison of 400 in Carlisle Castle.

When the English retreated, De Ruyter was reluctant to follow, perhaps because of lack of gunpowder.

When Charles VIII of France invaded Savoy, Piedmont, and Italy in 1494 and conquered Naples, the House of Savoy retreated and established its residence in Turin, where it remained until the unification of Italy.

When its commander Lorenzo de Olazo was wounded, the Spaniards retreated.

When Maximian himself finally left his retreat and returned to Rome to assume the imperial office once again and support his son, Severus with the rest of his army retreated to Ravenna.

When Jackson reached Pensacola on May 23, the governor and the 175-man Spanish garrison retreated to Fort Barrancas, leaving the city of Pensacola to Jackson.

When Morgan returned fire with his own artillery the home guard quickly retreated back toward Corydon leaving Mauckport undefended.

When the Dutch vessels retreated towards Terschelling, the English followed, destroyed 150 Dutch vessels, and landed in the harbour of West-Terschelling.

When the sea retreated again at the end of the 13th century the places in the region grew.

When the allies retreated, they left behind most of their wounded and the French respected the agreement, a precursor of the Geneva Convention.

When the vast glaciers of the north retreated, the left numerous dry river channels crisscrossing the Llano Estacado.

When the LDS Church authorities sent 150 men to help secure the Weber colony, Terikee's band took the body of their chief and retreated northward.

When the Mexican army retreated from Texas at the end of the Texas Revolution, they tore down many of the Alamo walls and burned some of the buildings.

When Robert E. Lee retreated from Gettysburg, over 5000 wounded Confederate soldiers were left behind which were then treated by Dix's nurses, like Cornelia Hancock who wrote about what she saw —" There are no words in the English language to express the suffering I witnessed today ...."

When the Kuomintang retreated to Taiwan, Chiang ordered the execution of Yang, his wife and his son as a small child.

When HMS Lowestoffe raised its flag as it neared Quebec, Lévis raised the siege and retreated to Montreal, where he surrendered in September to overwhelming British forces that approached the city from three directions.

When the Allied campaign led by Prince Eugene and the Duke of Marlborough engaged the French at Malplaquet, Villars was wounded and the French retreated from the field, but the Allies suffered twice as many casualties and their campaign soon sputtered out.

When this area came under threat, he retreated to Saigon in French Indochina.

When the mass of the army retreated, they retrieved their imprisoned guard and took Dr. Beanes as a captive to their fleet near Baltimore.

When Kong Le retreated from Vientiane, he took with him two usable C-47s and two L-20 Beavers from Aviation Laotienne and formed the Neutralist Laotian Air Force.

When the Gothic campaign ended in Roman victory at the Battle of Naissus in September, Gallienus ' successor Claudius II Gothicus turned north to deal with the Alemanni, who were swarming over all Italy north of the Po River.

When the Christian church split in 1054 between the East and Rome, the region of southern Albania retained its ties to Constantinople while the north reverted to the jurisdiction of Rome.

When speaking Mongolian, speakers will typically use the words for " front ", " back ", " left ", and " right " to mean " south ", " north ", " east ", and " west ", respectively.

When the Taliban took power in 1996, all the warlords fled Kabul to the north or neighboring countries.

When Cnut the Great came north in 1031 to accept the submission of King Malcolm II, Macbeth too submitted to him:

When Spanish conquistadors arrived in the Western Hemisphere, they discovered that around the islands of Cubagua and Margarita, some 200 km north of the Venezuelan coast, was an extensive pearl bed ( a bed of pearl oysters ).

When, in 1898, attempts were made to actually collect the tax, they rose up, first in the north, led by a dominant Temne chief called Bai Bureh, and then in Mende country to the south.

When these were analyzed and compared with samples from jasper sources around the north Atlantic area, it was found that two buildings contained only Icelandic jasper pieces, while another contained some from Greenland ; also a single piece from the east coast of Newfoundland was found.

When spring comes, Thorhall Gamlason, the Icelander, wants to sail north round Kjalarnes to seek Vinland, while Thorfinn Karlsefni prefers to sail southward down the east coast.

When he finally withdrew most of the allied army to Cremona, the Austrians advanced on the north bank of the Po as far as the Adda before both armies entered winter quarters in December 1734.

When the Southern-dominated Congress passed the Fugitive Slave Act of 1850, requiring law officials in free states to aid efforts to recapture slaves, she helped guide fugitives farther north into Canada, where slavery was prohibited.

When wheat flour began to come into common use for making cakes and puddings, cooks in the north of England devised a means of making use of the fat that dropped into the dripping pan to cook a batter pudding while the meat roasted in the oven.

When the compass is in use, the rose is aligned with the real directions in the frame of reference, so, for example, the " N " mark on the rose really points to the north.

When the fire destroyed the waterworks, just north of the Chicago River, the city's water supply was cut off, and the firefighters were forced to give up.

When Eisenhower asked Patton how long it would take him to disengage six divisions of his Third Army and commence a counterattack north to relieve the 101st Airborne, Patton replied, " As soon as you're through with me.

When glaciers covering the north of Britain melted at the end of the last ice age, two things happened to create the Solent.

When a particularly harsh winter up north brought an influx of beggars to Nice, some of the rich Englishmen proposed a useful project for them: the construction of a walkway ( chemin de promenade ) along the sea.

When his image appears on the side of a coffin, he is usually aligned with the side intended to face north .< ref name =" Wilkinson 88 "> Wilkinson, Richard H. < cite > The Complete Gods and Goddesses of Ancient Egypt </ cite >.

When William marched north and the two armies confronted one another the kings opted to talk rather than fight.

When horses became scarce in the Kimberley in the 1950s due to widespread losses because of the " Walkabout Poison ", the stock route was used to drove horses north from around the Norseman area where they were sold to the stations.

When the newly settled Turkish population arrived they generally lived in the north of the old riverbed.

When the Russians entered the Kamchatka Peninsula they had to travel overland from the north.

When a revolutionary gives a speech to try to drum up support for the army approaching despite rain in the north, Wang Lung and O-Lan realize the drought is over.

When the Noldor led by Fingolfin discovered their betrayal, they went farther north and crossed the sea at the Grinding Ice which cost them many lives.