J and ngyíng is a Chinese word, pronounced as J and Ngyí ng, which describes light and transparency and refers to spherical objects such as dew. From the back of Zhu Ziqing.
Crystal refers to the color of ice and snow or water, which can be displayed by cold light in ice and snow, and crystal is a bright luster, pure and transparent, just like a gem.
Generally, the former means that the color of snow or ice is white, and the second means blue, white and other colors, such as crystal clear.