Mao Collection, Upper Volume
Radical: Heart (xīn)
忪
Kangxi Strokes: 8
Page 377, Entry 27
Broad Rimes (Guangyun) and Collected Rimes (Yunhui) state it is pronounced zhong. Collected Rimes (Jiyun) states it is pronounced zhong. Jade Chapter (Yupian) defines it as the appearance of a heart that is agitated and not settled. Also, it means to be startled or panicked and hurried.