This over one-meter-long shovel-like wooden tool is named si. It was used by Jinsha people for plowing more than 3000 years ago. Si was recorded in ancient books, said to be invented by Shennong, a deity in Chinese mythology. Current archaeological materials show that si emerged with agricultural development. This piece here proves that the Chengdu plain already saw an agricultural culture and thriving rice cultivation back then.

       This si was made of an entire piece of wood, but found in three parts with scraps around during excavation. After dehydration, reinforcement, and renovation for four years, it was finally restored. This is the only well-preserved wooden farming tool of the Shang and Zhou dynasties in China and important proof of the thriving rice cultivation in the Chengdu plain.