The baskets he's carried up the hillside give a clue to Yang's business.But before he starts work, he needs to let some water out of the system.As the water level drops, the mystery is revealed. Golden carp.Longxian villagers discovered the benefits of transferring wild caught carp into their paddy fields long ago.The tradition has been going on here for at least 700 years.As the water level in the paddy drops, bamboo gates stop the fish escaping.The beauty of this farming method is that it delivers two crops from the same field at the same time.Fish and rice.Smart ecology like this is what enables China to be largely self-sufficient in food, even today.
