Legend of the Sword and the Chivalrous Man 5 What is the roast duck for?

The description of the legend of the sword and the chivalrous man 5 roast duck is as follows:

Roast duck can increase the vitality of characters, and the most important thing is to improve their fighting capacity. BOOS will be more lethal, and of course there will be side effects, that is, it may choke the characters to death, but the chances seem small, depending on the characters.

Related details

Legend of the Sword and the Chivalrous Man 5 is a domestic stand-alone Chinese role-playing computer game produced by Soft Star Technology (Beijing) Co., Ltd. under Daewoo Information. The plot took place more than 30 years after the original plot of The Legend of the Sword and the Chivalrous Man. In addition to the game itself, there are three DLC movies, namely Phantom of the Devil, Today's Yellow Rain and Past Dreams.