13 events the sources record for this year, grouped by region.
What happened
China (13)
The upheaval of the Lü clan: Guan Ying went to attack the King of Qi, but at Xingyang he allied with Qi and waited for the Lü clan to be put to death. (Book of Han (Hanshu), Imperial Annals 漢書卷003 高后八年)
Grand Commandant Zhou Bo entered the Northern Army and ordered: whoever sides with the Lü bare the right arm, whoever sides with the Liu bare the left; all the troops bared their left arms. (Book of Han (Hanshu), Imperial Annals 漢書卷003 高后八年八月)
Liu Zhang, Marquis of Zhuxu, chased Lü Chan in the courtyard of the Weiyang Palace and killed him in the privy of the Langzhong office. (Book of Han (Hanshu), Imperial Annals 漢書卷003 高后八年八月)
At the ministers' request, the Prince of Dai (the future Emperor Wen), with Song Chang and Zhang Wu, set out by carriage for Chang'an after divination gave the omen 'great crossing'; he halted at Gaoling and sent Song Chang ahead to read the situation. (Book of Han (Hanshu), Imperial Annals 漢書卷004 高后八年 後九月(閏))
At the Wei Bridge he was welcomed by the ministers; after three refusals at the Dai residence he took the throne, and that evening entered the Weiyang Palace. (Book of Han (Hanshu), Imperial Annals 漢書卷004 高后八年 後九月(閏月己酉))
At Zhidao something like a blue dog bit Empress Lü under the arm; divination said it was the spirit of King Ruyi of Zhao, and she fell ill from the wound. (Records of the Grand Historian (Shiji), Annals 史記卷009 呂太后本紀)
Before she died, Empress Lü made Lü Lu in charge of the Northern Army and Lü Chan in charge of the Southern Army, and admonished them to 'guard the palace and not go to the funeral'; she died on the xinsi day. (Records of the Grand Historian (Shiji), Annals 史記卷009 呂太后本紀)
Liu Zhang, Marquis of Zhuxu, told his brother the King of Qi, who raised troops to march west against the Lü clan, killing Chancellor Shao Ping and seizing the Langya King's army. (Records of the Grand Historian (Shiji), Annals 史記卷009 呂太后本紀)
Guan Ying, sent by Chancellor Lü Chan, reached Xingyang, learned of the plan to attack the Lü clan, halted his advance and allied with Qi. (Records of the Grand Historian (Shiji), Annals 史記卷009 呂太后本紀)
Zhou Bo entered the Northern Army and ordered: those who support the Lü clan bare the right sleeve, those who support the Liu clan bare the left. All bared the left, taking control of the Northern Army; then the Marquis of Zhuxu killed Lü Chan in the Weiyang Palace. (Records of the Grand Historian (Shiji), Annals 史記卷009 呂太后本紀)