Peng Dehuai bears significant responsibility for the death of Mao Zedong's eldest son.

When the Communist forces' headquarters was discovered by the US military
and bombed.
If Peng Dehuai had handled the situation better,
Mao Zedong's son wouldn't have died.
It seems that because of this, Peng Dehuai later
became one of the targets who was kicked and beaten in the chest
by the Red Guards.