Kai Syaoran had to make up some excuse about him coming from a culture where he was only allowed to kneel to his parents and wife.
Daoist Heaven Dao confirmed this to be something she had heard about.
When she had gone to investigate the village where Lin Min claimed to come from, she found that the village had been destroyed in a volcanic eruption. She had still managed to get some information about the village and this was indeed one of their customs.. Kai Syaoran had chosen this village after detailed research.
When the time came for him to set up his back story of leaving his home village for the city after his village had been destroyed, he wiped the memories of all the villagers before forcing them to move the village to other locations hundreds of kilometers from their original village.
He then used his power of speech to make the dormant volcano erupt.
