Which episode is Zhao Guanke's rural daughter-in-law

The TV series In Full Bloom is the seventh episode of Zhao Guanke's wife's visit.

One day, a fat woman came to Zhao Guanke from her hometown and claimed to be his wife named Ma Sanni. Zhao Guanke was shocked. He has never been married. Where did he get a wife? Fat sister-in-law told him that it was his mother who was afraid that after he died, she was in a hurry to renew her fragrance. According to local custom, she used a rooster instead of him to worship the church.