The cub that was born on the 26th of August to Ying Ying could of been sired by Mei Sheng, the giant panda that was born in San Diego Zoo and returned to China.

Mei Sheng was one of two pandas who mated with Ying Ying when she came into season. The other panda who mated with Ying Ying was Lu Lu

Mei Sheng was only mated with Ying Ying. It was the first time that he had been mated.

Currently they do not know who the father is, but DNA tests could be done to establish the father, as such is the interest in Mei Sheng.