C1050 Whoever Goes Back on Their Word Is the Grandson

Article 1049, who goes back on his word and who's the grandson?

Did the others not notice a phenomenon from the beginning?

The people of Pill Hall had been sitting there quietly since the beginning, not saying a word. Was this still the Pill Hall of the past? Every time Dan Fu met, the situation of a verbal battle would be different. But why was it that this time