the old man said that the underground cave was the space for him to pursue peace and comfort, allowing him to be free from external noise pollution, natural disasters, or climate change. So it was very reassuring to live with my family,
, and the old man said that although his underground palace was big, he was not going to stop it. Later, he will continue to chisel out more spacious and comfortable space with his own hands until he can not completely dig. He also joked that he might someday be able to dig all the way to China. (the old man is very ambitious)