Zi Collection, Page Position: Lower
Radical: Heart (xīn)
Page 85, Entry 14
Guangyun (The Broad Rhymes), Jiyun (Compilation of Rhymes), and Yunhui (Collection of Rhymes) all record the pronunciation as tong (level tone).
Yupian (Jade Chapters) defines it as the meaning of sorrow.
Also, Jiyun (Compilation of Rhymes) records the pronunciation as tong (level tone). Boya (Broad Elegant) defines it as fear and apprehension.
Also, it expresses the appearance of being hurried and urgent.