Lan Yu with ice scales is a commodity, which costs 8 copper coins. The way to get it is: it can be captured by the lanyu faction in Nageland, with an 80% chance of capture.

Warcraft fishing method

Fishing is a mini game that allows you to catch fish. The fish caught can be used for cooking. You can also catch some inedible fish in exchange for other professional skills. You can also catch some inedible fish in exchange for other professional skills. You may even catch all kinds of equipment, interesting things and jewels like pearls.

Fishing is not an errand for everyone. You must have extraordinary patience and enough time to gradually upgrade your fishing skills to the top level. When fishing, there is no experience value to gain, so you can forget to upgrade completely-unlike other professional skills.