This should be Stereochilus brevirachis! Very cute species, which also occurs in China.
O&M 0410 Cleisostoma brevirachis | Flickr - Photo Sharing!
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This should be Stereochilus brevirachis! Very cute species, which also occurs in China.
O&M 0410 Cleisostoma brevirachis | Flickr - Photo Sharing!

It's Stereochilus, probably brevirachis, which is native to Vietnam. S dalatensis is also native to Vietnam, but bigger and gets more flowers. It also has a bigger spur.
Thank you all for your help and your comment.
Search on internet the name Stereochilus brevirachis have more close result than Cleisostoma brevirachis. I will take the name of Stereochilus brevirachis first.