Li Yao suddenly felt that he was lucky.
He had been cautious enough to not leave any trace behind after he landed.
Otherwise, even if the army of the court overlooked him, the 'observer' that had been prying in the darkness certainly would have grown suspicious. He would have been mired in endless trouble.
The fact that the stranger could attach a feeble telepathic thought to a mosquito and remotely control it from several mountains away suggested that his Cultivation was at least as good as that of the female sword Cultivator at the peak of the Core Formation Stage.
Thankfully, the mosquito was made of flesh and blood, so not too many techniques could be stored inside the tiny body. It was already its limits to observe the battle.