After beating Faramir up, Fang Zheng slipped away that very day. Though he had intended to stop him from throwing his life away, he had beaten the Steward's son in front of so many people in the White City. Staying there would have been rather awkward, so Fang Zheng decisively made himself scarce.
In any case, he had delivered the letter from the King of Rohan, gotten a fairly good look at Sauron's military strength, and by his reckoning, Rohan's army should have finished assembling by now. So Fang Zheng turned around and headed back.
By the time Fang Zheng arrived at Dunharrow, it was already the morning of the third day. Upon learning of his arrival, the old King and the Prince immediately came out to greet him.
"You're finally back, sir!"
"Yeah, I'm back."
Fang Zheng nodded at the two of them, then looked around.
"Where are those guys?"
"...They left."
At Fang Zheng's question, the Prince sighed. Naturally, he knew whom Fang Zheng meant.
"Oh, I see."
Of course Fang Zheng knew where the Rangers had gone. They had gone to the Paths of the Dead, where Aragorn would summon an undead army that had once deserted, in the name of the King of Gondor. Then they would return to the White City and crush Sauron's army.
To be honest, this was the part Fang Zheng disliked most in the movie. Before this, there had been no undead army at all. Then suddenly the Elf King showed up, gave Aragorn a sword, and Aragorn took it to summon an undead army. It felt completely forced and made no logical sense. Everyone had been prepared to fight to the bitter end, only for someone to suddenly activate cheats and summon an invincible army immune to blades, spears, and