In the end, he only sent a WeChat message, because making a call now was a bit too complicated. How would he explain that he was no longer in the mountains, but inexplicably had to go to the military camp, and moreover, it had to be kept secret for the time being!
However, Zheng Mei was constantly sending him messages to assure him of her safety, and he had other channels through which he could stay informed about the situation in Handong, so there was no need for him to worry too much.
As for Leng Qingxue, she strictly adhered to the secrecy policy, not revealing a single word of the itinerary throughout the entire journey, showing potential as if she were to join the Secret Bureau, especially since she hadn't mentioned to anyone the incident where Su Sheng saved her at the very beginning.
The unreliable-looking young girl was actually incredibly tight-lipped. Su Sheng guessed that this was one of the reasons he decided to bring her along in the end.