What does it mean to open a lake?

Opening a lake refers to setting a certain period of no-fishing every year in order to achieve a virtuous circle of aquatic products cultivation in the lake. When the no-fishing period expires, it is called opening a lake.

Opening the lake:

Qinghai Lake usually enters the freezing period in mid-December every year, and it is completely thawed in mid-April of the following year, and the freezing period lasts for 5 months. When Qinghai Lake was unsealed, the ice layer of Qinghai Lake began to melt, and the lake seemed to be a broken mirror. The blue lake reappeared with blue waves and the sacred lake reappeared with charming beauty. People called this natural phenomenon "opening the lake". The opening scene of Qinghai Lake is very spectacular, with the saying of "Wen Kai" and "Wu Kai".