The Ten Heavenly Stems and Twelve Earthly Branches used in the traditional Chinese calendar system to track years, months, days, and hours; often referred to as [[干支|干支|gan1 zhi1]] for short.

The ancient Chinese system of ten cyclic characters: [[甲|甲|jia3]], [[乙|乙|yi3]], [[丙|丙|bing3]], [[丁|丁|ding1]], [[戊|戊|wu4]], [[己|己|ji3]], [[庚|庚|geng1]], [[辛|辛|xin1]], [[壬|壬|ren2]], and [[癸|癸|gui3]]; used for calendar cycles and as ordinal numbers like I, II, and III.

Dry weather and parched surroundings, used to describe conditions where the air and objects have very little moisture and are highly flammable.