"Bodhisattva! How many times have I taught you? Even heads made of elm ought to have opened up by now! How are you still like your skulls are smeared shut with mud, not a single hole clear!... Watch my hands. Like this, then like this, and finally like this!... Turn hard, adjust the sail's direction, let its face meet the southwest..."
"The wind right now is a south wind, a south wind! The wind blows from the south toward the north! If we're sailing north, the sail meets the south wind and turns slightly east, not square into it! A Tang-style Lanteen Sail has to sit a little slanted when facing the wind, just this tiny angle off... And if we're sailing east right now, the sail has to turn far to the east, at a big, big angle... leave only half, half of it meeting the south wind! Only then can we borrow the divided strength from the south wind and sail east!..."
"God above! Once the main sail is angled right, look at the heading of the bow! The two sails at the bow and stern have to be adjusted with it too. You have to make the bow point east, not let the ship slip north... The hull leaning sideways and pressing north, that's right! We have to rely on that slanting force to shed the northward strength of the wind and leave only the eastward force..."
"Main God! As I'm talking, the wind direction has changed again. It's coming from the southwest, so naturally there's even more eastward force we can borrow!... So the sail has to be adjusted a little more before the ship can go faster... How do you adjust it? You try... What?! Why are you still adjusting it west? We're borrowing force