The first is "Enemy at the Gates", not "Wang Lincheng". King's Landing is the world. In fact, you can say "King's Landing at the Gate", but this is neither an idiom nor an idiom. "unify the world" is not an idiom, but it is very common)

Soldiers (troops) approached the city: the enemy attacked it. Describe the critical situation of soldiers being besieged.

Source "The Warring States Policy Qi Ce II": "Qi will raise troops to cut down the beam, and Liang and Qi's soldiers can't even go to the gate, so the king will cut down Korea in the meantime."

"Soldier/Army": Army.

"Soldiers (troops) are at the door" "Pro": Here we are, here we are.

"The king reigns in the world": looking down from a height.

"City": the high wall around the city.

"Jun": The feudal era refers to emperors, vassals, etc.