This looks "C.bicolor x C. dormaniana" - In natural, their glowing regions are very closed. C. dormaniana is native to the 500-700m areas & C. bicolor is found of the south eastern regions at 800-1500m. However, you can distinguish by the labellum & the height of the plant. The height of C.dormaniana is about 25cm with a thin pseudo-bulb & has a weak root. For your ref only.