It had been too long...
He had lived in Teyvat for too long...
From his First Life until now, several years must have passed through everything he had experienced.
In Teyvat, where letters were the only means of communication, Xiu Yuan had forgotten one thing.
Signal fires.
That most primitive means of sending a signal.
Xiu Yuan had forgotten it completely.
Throughout Yide's days on the island, Xiu Yuan had kept track of his movements.
Xiu Yuan had also suspected that he might be a pirate.
But the man went out to sea with Gongshu and returned with him, too.
From beginning to end, Gongshu had shown no sign of anything unusual.
That had dispelled Xiu Yuan's suspicion that Yide might be doing something wicked while out at sea.
And Yide had neither received nor sent any letters.
So Xiu Yuan had concluded that he was working alone. Even if he wasn't, he had no way to contact anyone else.
But for all his calculations, Xiu Yuan had never imagined that the oblivious Gongshu could board a pirate ship without noticing anything amiss.
Besides, only Jintai and Rina knew that Xiu Yuan would be leaving Watatsumi Island this time.
Xiu Yuan trusted them both.
Yet he had never expected Rina to tell Yide almost as soon as he had told her.
If the first two oversights could be blamed on them,
then the last was entirely Xiu Yuan's own fault.
Because the fundamental reason Xiu Yuan believed Yide could pose no threat
was this.
Yide was alone.
He couldn't cause any major trouble on his own.
And Xiu Yuan would only be gone for two days. There was no way Yide could contact the outside world in that time.
The little boats on Watatsumi Island could only reach nearby Yashiori