Yun Mingshen was perfectly well aware that their group was in the restaurant lobby. Although it was somewhat noisy, and conversation easily got lost in the buzz, everyone here was a cultivator.
If they paid even the slightest attention to their table, they would easily hear what was said, as long as none of them had put up a sound cancelling barrier.
The waiter was also aware of this, and he knew that his eavesdropping would not be punished. In fact, he had not been eavesdropping at all, he had been waiting to take the order that they wished to make, but the sudden surprise had caused Yun Mingshen to lose his focus, and the current situation had followed.
Yun Mingshen was someone who had come all the way from the Wushi Continent. To him, the people on this prison continent were not able to put up much of a fight, and he did not care for them knowing his background as someone from above.