C99 Learn to row

The boatman swore and said he wouldn't take us in, and the more he did that, the more suspicious I became. It was not that he suspected the boatman of having a problem, but that there was a problem with the entire Longchuan karst cave.

Logically speaking, even if the Longchuan karst cave had a rule not to bring tourists to row for more than fifteen minutes, but right now