C42 drop a stone in a well

(i)

At five in the afternoon, President Kai Benlien and Miss Ita Finley both returned to their apartment.

That day, Dalton and Nuo Baoshoufu informed Katherf of the competition's information. Katherf was exceptionally happy when he heard it, and had even tactfully reported this matter to President Kai Benlien. Naturally, President Kai Benlien was very interested in this. Thus