If Lan Su did not have the sandalwood box in her hands, Yun Jian would keep her guard up. After all, this girl in front of her came out of the blue. There was no way Yun Jian could make sure that she was not an assassin sent to kill her.
Assassins and secret agents nowadays were impressive with their disguises and Yun Jian was never lacking in alertness and guard facing someone she did not know.
Yet, Lan Su produced the sandalwood box.
The sandalwood box!
Of course Yun Jian remembered that the sandalwood box had been placed by Si Yi in a place that did not belong to the real world at the other end of the cave which no one was able to pass through in the catacomb.
That place was called Yulong Mainland, somewhere completely different from the dimension they were now living in.