Wu Collection, Lower Volume Radical: Stone (shí) Gong Kangxi strokes: 12 Page 830, Entry 24 Correct Writing Guide (Zhengzitong) states it is the same as the character for a rumbling sound. Additionally, according to the Rhyme Collection (Jiyun), it is pronounced hong, which has the same sound as the character for a thunderous roar. It refers to the sound of stones falling. In the Fu on Cultivating the Field (Jietianfu) by Pan Yue, it is written: The sound of the drums and the sound of the small drums are rumbling and indistinct, like the crashing of stones.