Nice dragon and phoenix twin names:

Qihua (girl's name) and Shu Qi (boy's name): Take "flower tree"

Elegance (female name) and volume (male name): from Elegance.

Jiayin (girl's name) and Le Jia (boy's name): from Music.

Jia Kai (boy's name) and Jia Xuan (girl's name): From Triumph.

Wen Jia (girl's name) and Wu Jia (boy's name): From Wu Wen.

Jiabao (girl's name) and Bega (boy's name): from Baby.

Xue Rui (girl's name) and Ruibing (boy's name): From words with similar meanings.

Zhong Ling (girl's name) and Yu Zhong (boy's name): from Zhong Ling Yu Xiu.

Ruimin (girl's name) and Ruicong (boy's name): From Congmin

Jun Hong (boy's name) and Li Hong (girl's name): From Jun Li.

Hong Wen (girl's name) and Hong Jing (boy's name): From Wenjing.

(Girl's Name) and Holding Yu (Boy's Name): Excerpt from Holding Yu

Ethan (female name) and James Li (male name): Source.

Xinyi (female name) and Xin Ran (male name): From Enjoy Yourself.