What's the use of swimming pangolin against the current?

Exploitation of mineral resources in the world. According to the introduction of the mobile game "Welcome to Cold Water", the role of pangolin in the game is to exploit the world's mineral resources and process them into refined ore or scientific and technological products. "Keep out the Cold" mobile game is a martial arts MMORPG mobile game with grand opening to the world, which was authorized by Wen Ruian and developed by Hangzhou Netease Lei Huo Technology Co., Ltd.