C546 Sea of Sands
The reason why Shen Longxuan did not act against Fu Yinghun was because their goal was to save their Mistress. There were only thirty days of time, and a third of it had already passed.
Hence, they had to pass through this place quickly. This way, they could not waste the flower of star and moon's energy, otherwise, no one would be able to pass through here.
"Second Senior Brother