Defeat every big-headed doll in the Pavilion tower overlooking Huang Manor, and the Pavilion of Knowledge Rooftop Key is awarded automatically. It unlocks the highest-floor door, leading to the rooftop terrace and the Child of Insight.
Quick answer: Defeat every big-headed doll in the Pavilion of Knowledge tower overlooking Huang Manor in Pangzhen, including the second wave on the top floor, and the Rooftop Key is awarded automatically.
Where the Pavilion tower is
The tower you want is the Pavilion of Knowledge, which sits on the hill overlooking Huang Manor in Pangzhen.
Start at the Pavilion of Knowledge Crossroads bell and follow the hill path up for roughly 60 m until you reach the tower’s veranda. The entrance is the red double door flanked by couplets, and pressing E there opens it.
Inside, the ground-floor hall is quiet. You’ll see tables, a small pool watched over by stone lions, and a wooden staircase leading up to a landing. Nothing attacks you down here, because the dolls are all upstairs, so head up the stairs to the upper floors.
Big-headed dolls guarding the key
The dolls are spread across the upper floors. A sword-wielding Ha-ha with 5,729 HP holds the middle floor. One floor higher, a second Ha-ha at 5,729 HP fights alongside a Hee-hee with 4,166 HP. The top floor has two Hmph-hmph, each with 5,729 HP.
Taking down both Hmph-hmph on the top floor doesn’t end the fight. A second wave spawns on that same floor, made up of one more Hmph-hmph and one more Hee-hee.
Hee-hee restores health to the other dolls. In about 15 seconds, it can raise a Ha-ha from 5,340 HP to its maximum of 5,729 HP.
Pavilion of Knowledge Rooftop Key card
You don’t have to loot anything. The moment the final doll in the tower falls, the key card pops up on screen by itself, which is how you know the key is now in your items.
It’s filed as a Story Item. The card is titled “PAVILION OF KNOWLEDGE ROOFTOP KEY” and describes it as “A key to the uppermost level of the Pavilion of Knowledge. The teeth are cast in the shape of the Qian trigram: three unbroken yang lines, strong and solemn.” Beneath that sits the line “Heaven follows its constant course, while the world’s secrets gather within this pavilion.”
The rooftop door and the Child of Insight
Remain on the top floor and locate the lone wooden door, marked by its lattice window. With the key in your inventory, press E to open the door; using it consumes the key.
Past the door is a tiled rooftop terrace, dotted with a barrel, crates and sacks, looking out over Pangzhen.
The Child of Insight waits on the terrace. He is a small figure wearing a large mask with a pink child’s face, and his hair is arranged in two buns. With no gift to offer, your conversation goes no further than this line: “Ahh… Rare guest, rare guest—ahem. I know no one’s here… I was just practicing.” He has no shop, and visiting him yields no item.
He matters later. The Child of Insight accepts the keepsakes for Xue, Admirer of Heroes and the evidence for Four Fierce Axes, which makes this rooftop the end point for both quests.
Sha-Chi Amber Shard chest in the tower
On the tower’s second floor, a metal chest sits in the corner of the raised balcony and contains a Sha-Chi Amber Shard. The E prompt is easy to miss, since it only appears when you’re standing at the balcony edge and facing the chest.
More keys and Pavilion tower guides
Every location for the Sha-Chi Amber Shard is collected in one place.
The remaining keys are covered in the rundown of all keys and cranks.
The big-headed dolls, along with every other foe, appear in the enemies list.
