Why didn't Emperor Kangxi punish the biggest corrupt official in the Qing army?

In the action of recovering Taiwan Province Province in those years, there were two people who made the greatest contribution-one was Yao Qisheng, the governor of Fujian who formulated strategic policies and guaranteed logistics, and the other was Hou Shi Lang, the Jinghai who specifically implemented the attack plan.

In the process of recovering Taiwan Province Province, both Yao Qisheng and Shi Lang tried their best to recover Taiwan Province Province. After the successful recovery of Taiwan Province Province, Yao Qisheng and Shi Lang were the greatest heroes. But when the good news reached Kangxi, because Shi Lang's good news was two days earlier than Yao Qisheng, Emperor Kangxi rewarded Shi Lang for the first time, but did not reward Yao Qisheng.

Yao Qisheng returned to his hometown-Fuzhou with great disappointment, and soon Yao Qisheng fell ill and died. However, one year after Yao Qisheng's death, the Qing Dynasty ordered Cha Qisheng to overcharge the imperial court with 47,200 taels of gold when building warships and buying combat equipment.

At that time, court officials wrote to Emperor Kangxi, demanding that Yao Qisheng be severely punished for corruption. However, Emperor Kangxi did not listen to the minister's advice and decided not to take it back, exempting Yao Qisheng from death.

The reason is-"study hard and avoid it." To put it simply, in Emperor Kangxi's view, Yao Qisheng made a great contribution to helping him recover Taiwan Province Province, far above 42,000 gold, and there was one thing that Emperor Kangxi never forgot at that time, which was why Yao Qisheng was exempted from punishment.

According to historical records, Lang Shang, then the governor of Fujian, played Emperor Kangxi, saying that Yao Qisheng and his son had repeatedly made meritorious military service, and they raised their own troops and bought horses to prepare armor bows and arrows, which were raised by themselves with 52,000 yuan. Emperor Kangxi once praised Yao Qisheng for this. Therefore, Emperor Kangxi finally failed to hold Yao Qisheng accountable.