The Cowherd mistakenly took poison and his temperament changed drastically, causing the Weaver Girl to commit suicide by jumping into the river.
Heaven was greatly angered. In order to retaliate against Cowherd, he allowed him to be reincarnated many times with memories and guilt, but deliberately labeled him as "unable to love, regret for life, and die in depression."
Unbearable torment, the Cowherd finally chose to give up and be reborn...
Purpose: Only by cherishing the present can you reduce regrets.