Si Collection, Middle Volume
Radical: Fire (huo)
Character: Chong
Kangxi Stroke Count: 22
Page 687, Entry 34
Broad Rhymes (Guangyun), Collected Rhymes (Jiyun), and Rhyme Compendium (Yunhui): Pronounced tong.
Jade Chapter (Yupian): To smoke, to be hot.
Broad Rhymes (Guangyun): Dry heat.
Collected Rhymes (Jiyun): Sometimes written in a variant form (chong).
Also, Broad Rhymes (Guangyun): Pronounced gong.
Collected Rhymes (Jiyun), Rhyme Compendium (Yunhui), and Correct Rhymes (Zhengyun): Pronounced chong. The meaning is the same.
Approaching Elegance (Erya), Explanation of Teachings (Shixun): Chong-chong means scorching heat, or to smoke.
Commentary: The Greater Odes (Daya) in the Book of Odes (Shijing), in the section regarding the Cloud and Han rivers, states: Accumulated intensity is chong-chong. The sound and meaning of chong and chong are identical. In the Approaching Elegance (Erya), it is sometimes abbreviated as the character for candle. It is also commonly written as the character for insect.
Also, Collected Rhymes (Jiyun): Pronounced tong. Originally written as the character for tong. Sometimes written in a variant form (tong). See the entry for the character tong for details. According to the original text of the Approaching Elegance (Erya), the pronunciation is tong.