Fang Qin was selected by the Jinghai Army.
Although Fang Qin was chosen largely because of Fang Mu, it was not entirely due to him.
Even without the connection of being a Grandmaster Creator's disciple like Fang Mu, during the selection process, Fang Qin's revelation of the Frost Tone Snow Dragonling and Cangluan Ying Jiao would have stood out among the younger generation of the Jinghai Army.
The Jinghai Army was selecting disciples for the "Dragon Mother."
If Fang Qin's strength hadn't met the standard, the Jinghai Army would not have dared to force Fang Qin upon the "Dragon Mother" to curry favor with Fang Mu.
The "Dragon Mother" understood Fang Qin's strength and the situation with his two Guardian Beasts through reports from the Jinghai Army, but she had not specifically learned about the Skills and unique traits of the two beasts.