How did Master Li know his wife? Which episode?

Hearing the news from Chen Feng, Master Li took people to bomb the Japanese secret armory in Hengshui City. On the way back, he was beaten by the Japanese in order to save the shot sweet potato. Just as the Japanese were preparing to kill Master Li, his later wife Sai: The Story of Diusim took people out to kill all the Japanese devils and brought Master Li back to the cottage. Because of the fortune teller's prediction, he wants to marry Master Li who is rebellious in his bones. The meeting was at the end of 12. . .