Luz: Zishui and Lushui both flow through Shandong. It is said that Yi Ya of Qi State is good at cooking and can distinguish the taste of Zi Shui from Lu Shui.
Meaning: Zishui and Lushui have different tastes, so the turbidity of water mirror and Weishui is totally different.
Zishui and land water have different tastes and can be distinguished together; Water mirror and Wei water are clear water and turbid water, but when they merge, they are still clear water and turbid water.