Quick answer: All three Estate Experiments Memory Flower petals are in Pangzhen: Petal I near the Pavilion of Knowledge Crossroads bell, and Petals II and III near the Green Serpent House bell. Collecting all three raises your maximum HP by 7%.
| Petal | Nearest bell and distance | Note |
|---|---|---|
| I. Disappearances | Pavilion of Knowledge Crossroads, about 310 m on foot | Three poison Elder Vessels (about 12,000 HP each) on the route; bring gourd charges |
| II. The Hidden Passage | Green Serpent House, about 55 m in a straight line | Grapple onto the stilt house deck, then climb the ladder |
| III. The Vanished Passage | Green Serpent House, about 76 m | Under a shed of scaffolding poles at the top of the stone steps |
The Estate Experiments Memory Flower in Phantom Blade Zero is split into three petals, and every one of them is in Pangzhen. You can collect them in any order. Petals II and III share the same bell, so you can pick them both up in one trip.
Petal II occupies a timber loft over a stilt house, while Petal III is beneath a scaffolding shed. The latter two are close to the Green Serpent House bell.
Petal I: Disappearances
Three poison-using Elder Vessels guard the route, with about 12,000 HP each. Two stand near the top of a long staircase and the third waits just before the flower. You can’t sneak past them. You have to fight all three, and the poison does real damage.
Begin at the Pavilion of Knowledge Crossroads bell and descend several ledges, each 1 to 2 m high, to the lane below. Follow the lanes to the slim passage at the base of the stone stair leading to Lion Dance Grandmaster memory 3. Two Blue Riders on horseback may be guarding the entrance.
Once you’re through, climb the long stone staircase that rises behind a tangle of dead thorn branches. The flower grows in a walled stone channel below a stair with a carved stone balustrade, next to a stone planter, on the way up toward the Mirage Estate.
In the memory, a Worldly Mandate Disciple says “Today, we’ll find out where they’ve been taking those people!” The Eager Mandate Disciple then realizes “Tss…wait… something’s off… isn’t this the way to the Mirage Estate—” before the ambush. The card that follows reads “MEMORY FLOWER: ESTATE EXPERIMENTS” and “I. DISAPPEARANCES”.
Retrace your route to return to the Pavilion of Knowledge Crossroads bell. A Mirage Estate bell is roughly 24 m beyond the flower, with two Vessel Vagrants right beside it.
Petal II: The Hidden Passage
Petal II occupies a timber loft over a stilt house built on rocks along the hillside from the Green Serpent House bell. The bell is about 55 m away in a straight line, and reaching the loft requires the grapple.
Walk to the stilt house and stand beside it, away from the deck. Look up at the grapple ring above the house until the Ctrl prompt appears on it, then press Ctrl. The pull drops you onto the deck. Don’t grapple from directly under the deck. If you do, the pull catches on the underside and puts you back on the ground.
From the deck, climb the ladder with Space and continue into the timber loft. The flower is next to a body on the floor. Press E to collect it.
At the start of the memory, a Keen Mandate Disciple remarks, “I never imagined the Thread-Binding Sect would hide their base in a place like this…” He asks if the surrounding devices are for the Heart-Carving Art. A Worldly Mandate Disciple orders him to leave, offering to keep the others occupied.
The card shows “MEMORY FLOWER: ESTATE EXPERIMENTS” and “II. THE HIDDEN PASSAGE”. To leave, climb down the ladder, step off the deck, then walk back to the bell.
Petal III: The Vanished Passage
Petal III is the easier one to reach near the Green Serpent House bell. Ascend the long stone staircase from the bell; roughly 76 m away, a shed made of scaffolding poles stands over the flower, which is beside a slumped body.
In the memory, a Lone Mandate Disciple is looking for the Thread-Binding Sect’s hidden passage and finds that it’s gone: “How… how could this be…? It’s gone… it’s not here…” The card reads “MEMORY FLOWER: ESTATE EXPERIMENTS” and “III. THE VANISHED PASSAGE”.
Reward for all three petals
Every petal card shows the line “Collect all Memory Remnants to increase HP +7%”. When you pick up the third petal, in whatever order you collect them, the game displays “(3/3) All Memory Remnants collected. HP increased.” and your maximum HP goes up by 7%.
