What deeds did Yongzheng have in his life?

Yongzheng (1678~ 1735), Aisingiorro Yin Zhen, the fourth son of Emperor Kangxi, succeeded to the throne after the death of Kangxi, and ascended the throne in 13. Yongzheng was an emperor with mixed reputation in history. After he succeeded to the throne, he brutally slaughtered his brothers who took part in the battle for the throne, set up a literary inquisition, severely suppressed intellectuals with anti-Qing ideas, and strengthened monarchy with special agents, all of which made him famous for his harshness and cruelty. However, he put down the rebellion of the nobles in Heshuote, Qinghai, countered the harassment of the nobles in Junggar, carried out land reform and returned to China in the southwest minority areas, and concluded the Sino-Russian Blenski Border Treaty and the Sino-Russian Chaktu Border Treaty with Russia, which made outstanding contributions to China's territorial integrity and national unity. During his reign, he made great efforts to govern, carried out a number of major reforms step by step, and achieved important results, laying a solid foundation for the "prosperous times" in the Qianlong period. After his death, he was buried in Tailing, Hebei (now Yixian West, Hebei). The name of the temple is Emperor Sejong Xian, and the history is Yong Zhengdi.