Hu Xiaodong even figured out the principle of sailing. As he fiddled with it, he suddenly said, "It seems like you can sail against the wind too, as long as you adjust the sail, zigzagging left and right will do.
"Going with the wind is even better, it saves so much effort! No wonder my grandfather's grandfather always longed for a sail! It's great!"
Alright then, this guy figured out the zigzag method for sailing against the wind all by himself. Hopefully, he can apply it properly in practice too.
Lu Xi'an said, "Do you want to try it in the water? Just test it nearby. If the boat capsizes, I can quickly pull you both out."
But Hu Xiaodong just grinned and said, "No worries, my son and I can swim. If the boat capsizes, we can swim ourselves, you two just help retrieve the boat."
Lu Xi'an laughed and said, "Don't worry, no problem!"
The father and son were indeed carefree, and immediately couldn't wait to push the boat into the sea.
