The two discussed and agreed to have a Grouper fishing competition that evening.
Grouper fishing is relatively easy; just find a shallow coral reef area, use the right equipment, hit the bottom, and you can catch them. Even Yue'er, by handling a rod, would be able to pull in the fish. In terms of difficulty, it should be one of the easiest in deep-sea fishing.
After dinner, Ah Bin and Lin Yang set off in two separate yachts to the coral reef markers they had visited before.
After two hours of sailing, they arrived at the first marker. Both boats dropped anchor, and Ah Bin, rather dramatically, had the captain daringly bring the boats close enough together that he could jump onto Lin Yang's yacht from the deck.