Zi Collection, Middle Volume, Page 345, Entry 07
Pronounced cè (entering tone) in "Jiyun" (Jiyun), same sound as "chēn". A type of tree.
Also pronounced chú (entering tone) in "Jiyun" (Jiyun), same sound as "zhēn". Pronounced xī (entering tone) in "Yupian" (Yupian), same sound as "xìn". The meaning is the same.