In civil law, what is the standard of death, brain death or stopping breathing and heartbeat? Please give the legal basis.

First, in China, "breathing, heart, pulse stop, pupil dilation is the standard of natural death of natural persons";

Second, if he dies in a hospital, the time recorded on the death certificate shall prevail;

Third, if the parties dispute the time of death, the time of death determined by the people's court after investigation shall prevail.

-Zhengzhou Yao lawyer