Yellow-spined Bamboo Locust (Ceracris kiangsu, ้ป่็ซน่).
Autumn is the great season for grasshoppers and many are out from the river to the forests. As its name suggests: this species can be quickly identified its top yellow strip, which extends from vertex to protergum. I see them often in the Hunan forest, usually from about July to October. They are great devourers of bamboo leaves.