The Phaneropterinae, the Sickle-bearing Bush Crickets, are a subfamily of insects within the family Tettigoniidae.
The name Phaneropterinae means "visible wing" and refers to the exposed tips of the inner wings seen in many species.
There are hundreds of different species worldwide.
I think this is a Ducetia sp., a genus of Asian Bush Crickets, but I am not sure.

Cuc Phuong National Park, Ninh Binh, Vietnam, 11 January 2024