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Old Master Tong knew that he couldn't make a fuss anymore which was why he agreed with Yu Dong. As the saying goes, the monk can run but the temple can't! Even if Old Madam Yu runs away, Yu Dong will stay in the village as she had the responsibility to develop this village.
And it was not as if he really wanted to marry Old Madam Yu, he just wanted someone to take the blame such that he will not have to be embarrassed. As long as someone was there to shield him from getting publicly embarrassed, he was going to be fine.
Since he had already made a fuss, it wasn't as if people were going to forget everything in just a day. Thus, Old Master Tong agreed and then went back home with Second Aunt Yu but before leaving he did not forget to leave a threat behind that if they were to refuse taking responsibility of him, then he was going to hang himself in front of the Yu house. Of course that was a lie but they did not have to know it.
