```
However, they have not seen any jewels yet, which suggests they are still some distance away from the main tomb chamber.
Bai Junjun could only suppress her impatience and slowly continue exploring inside.
Fortunately, although the tomb was large, the lighting system was well established; at least they had lights throughout their journey, and their vision was not disturbed.
Of course, this was probably the only benefit of the Black Spider entering first; at least they did not have to worry about lighting the lamps.
However, the two had already experienced the advanced ancient technology in Fubo City.
Back then, they had casually lit a lamp, and the flame could follow the oil pipes to ignite the other lamps.
This place, also from over a thousand years ago, must have had similar technology.
Despite Jade Pond being quite large, there were still many torches around, so lighting was not an issue.