Literature Reference: 赑屭牵不动，纶绝沈其钩。—— 《题海图屏风》 The Bixi turtle cannot be moved, the fishing line breaks and the hook sinks. Source from 'Ti Hai Tu Ping Feng'.
赑: The appearance of exerting strength.
屭:
Meaning: Bixi, a legendary dragon son, symbolizes immense strength and unyielding perseverance.