What's the point of dressing in a temple?

According to the provisions of Buddhism, there is such a requirement, mainly in the color of clothes:

If you are a Buddhist, the color of clothes should not be "positive color", that is, the color of clothes should not be one of the four solid colors of red, yellow, blue and black. Of course, few people wear such clothes now. In addition, since the mid-Ming Dynasty in China, even the clothes with positive colors are not illegal as long as they are decorated with another color. For example, a bright red skirt, the side of the skirt is made of other colors.

There is no rule for ordinary people to go to temples to entertain themselves.