A substitute marriage, three years of neglect.
It wasn't until his wife fell off a cliff, seven letters of divorce were opened, and Qiutang Courtyard was empty - that the Marquis of Zhenbei discovered:
The woman he had never seen in person blocked his arrows, protected his home, investigated the case, and finally died for him.
But her last divorce letter left this sentence: Don't marry me in the next life.