After a simple topographic survey, the team decided to open up a more hidden entrance.
The new entrance was in the small mountain forest behind the cliff. From there, they would dig a tunnel that directly connected to the cave.
Because the terrain in front of the cave was upward, after finding the correct location, they did not need to dig too deep to connect to the cave.
The task of finding the location was also very simple. One could just use a computer to do 3D mapping. In an era of unusually advanced technology, drawing a map and building a model was already many times easier than in ancient times.
Opening a cave in the mountain could actually be done to a very secretive degree. One could even find a few folk archaeologists from the Eastern countries and then take a few Luoyang shovels to complete a passage down.
However, these “Folk archaeologists”were more difficult to find because they did not like to go to jail, so they kept their identities very secret.
