Will there be frost in Tengchong in February of the lunar calendar?

It won't frost, but it's still a little cold.

The temperature difference between day and night is large, even at the end of February. All in all: wear spring clothes during the day and winter clothes in the morning and evening. Tengchong has strong ultraviolet rays, so it is best to wear sunscreen, sunglasses and hat during the day. Don't forget to bring lipstick, it's dusty there and your lips crack easily. There are many places worth visiting in Tengchong, and the weather is basically sunny. Have a good time.