This is a hieroglyph, just like a flame rising in an ancient fire.

Sparks also. From three fires. They are all Yan's.

Duan Yucai's Notes on Explaining Words in Qing Dynasty

Fire? Yes Words and meanings in ancient books are contradictory. For example, Cao Zhi's "Qi Qi Feng Li Yu Ju" is considered as an Anyanju. Yan Yan, the capital of the eastern part of Bangu, is considered to be hot. Wang Yiyue. It is also to get rid of illness. Shan Li noticed the word "no, don't". From three fires. Everything goes well, which is the third. Yiranqie Eight. Guangyun came to support logging. They are all Yan's.