Tongpai bonsai technique (Shigang bonsai making technique) is an extension of the traditional technique category of the fifth batch of representative items of Nantong municipal intangible cultural heritage. Shigang bonsai is not only a branch of Tongpai bonsai, but also forms its own style of shaping trees and following nature. It is characterized by clear, strange, elegant, sparse, hanging and ancient. Most of them are small and medium-sized, and they can see the big from the small, shrinking the world between a stone and a tree. The main varieties are sparrow tongue, boxwood, five-needle pine, Podocarpus, tiger thorn, dog bone, wolfberry, elm pile, plum tree, pomegranate, etc. The herbs are mainly orchids such as Clivia, which are characterized by fine materials, beautiful shapes, ups and downs, clear layers, and one-sided fullness.