He adopt his pen name from the cry heard in his steamboat days, signaling two fathoms (12feet) of water-a navigable depth.

He adopted his pen name from the cry heard in his steamboat days, signaling two fathoms (12 feet) of water — a navigable depth.

Guangzhou Design Research Institute for water Transport Engineering, Guangzhou has developed the newest survey system for navigable water depth, which is in the lead in the world in the same field.