Where is the location of Yuefeng water tank? How to judge whether water is needed?

Open the front cover of the engine and put a red liquid tank (antifreeze, preferably antifreeze) in the square below the front of the windshield. There are two scales on the cylinder, one is max and the other is min. The water in the cylinder should not be lower than the bottom scale, that is, the other is to warn that the water should not be higher than the top scale, and the middle is fine.