“…only death by beheading.”

https://en.wikipedia.org/wiki/Naming_taboo

A naming taboo is a cultural taboo against speaking or writing the given names of exalted persons, notably in China and within the Chinese cultural sphere. It was enforced by several laws throughout Imperial China, but its cultural and possibly religious origins predate the Qin dynasty. Not respecting the appropriate naming taboos was considered a sign of lacking education and respect, and brought shame both to the offender and the offended person. […] In 1777, Wang Xihou, in his dictionary, criticized the Kangxi dictionary and wrote the Qianlong Emperor‘s name without leaving out any stroke as required. This disrespect resulted in his and his family’s executions and confiscation of their property.^[2] This type of naming taboo is no longer observed in modern China.

https://en.wikipedia.org/wiki/Wang_Xihou

[…] When the Qianlong Emperor found out about this in 1777, Wang was imprisoned in Beijing and sentenced to nine familial exterminations, the most serious form of capital punishment in imperial China. However, as was usual in such cases with literary inquisition, the Emperor commuted the sentence by pardoning all Wang Xihou’s relatives and his grandsons given only a procedural sentence of execution at the autumn assizes (qiushen) during which the case would be reviewed and usually spared the death penalty. Wang Xihou’s sentence was commuted from death by 1000 cuts to only death by beheading.^[3]