First of all, we must understand what jk means. Jk was actually introduced into China from Japan. The word jk means female high school students in Japan (J and K in the pen name jyoshikoukousei), so jk uniforms are the uniforms worn by Japanese female high school students. After jk uniforms were introduced to China, they made girls look pure and lovely because of their good looks, and were deeply loved by domestic women. Jk uniforms can be roughly divided into two categories in style, namely, western-style uniforms and navy uniforms.

The boy's name is dk, and dk uniforms refer to the uniforms of male high school students. There are usually sweaters, shirts, ties, lapels, western-style uniforms and other clothing types. In addition, ruffles are the most common school uniforms for Japanese boys, with 70% of junior high schools adopting black ruffled uniforms and about 20% of colleges and universities adopting them. Western-style school uniforms were first tried out in government universities, and the earliest introduction of western-style school uniforms was the University of Industry and Information Technology (the predecessor of the Department of Engineering of the University of Tokyo).