Do the 24 solar terms belong to Chinese studies?

Yes, the 24 solar terms belong to the category of Chinese studies.

Twenty-four solar terms are an important part of China traditional culture, which not only reflects the wisdom of ancient meteorological observation and agricultural production in China, but also reflects people's observation and perception of natural changes. The 24 solar terms are divided into 24 periods according to the position of the sun on the ecliptic, and each solar term has its own unique climate characteristics and agricultural activities.