---
title: "YW-4 昨日海 Drop Rates (CN server)"
description: "YW-4 昨日海 drop rates on the CN server: Orirock Cube 166.70%, Polyketon 44.41%, Furniture 1.35%; 6,206,749 samples (2026-10-09 to 2026-10-23). Sanity cost 12. Updated 2026-10-24. Crowdsourced Arknights drop data by Penguin Statistics."
lang: en
server: CN
zone_id: "act52side_zone1"
stage_id: "act52side_04"
as_of: 2026-10-23T18:51:03Z
time_zone: UTC+8
rows: 3
rows_total: 3
canonical: "https://penguin-stats.io/en/result/cn/stage/act52side_zone1/act52side_04"
api: "https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=CN&stageFilter=act52side_04&show_closed_zones=true"
license: CC BY-NC 4.0
license_url: https://creativecommons.org/licenses/by-nc/4.0/
attribution: "Data: Penguin Statistics (penguin-stats.io), CC BY-NC 4.0"
---

# YW-4 昨日海 Drop Rates (CN server)

Server: **CN server**

Sanity: 12

Item drops of YW-4 昨日海 on the CN server, by percentage, highest first

| Item | ID | Loots | Samples | Percentage | Sanity Required Per Item | Time Range |
| --- | --- | ---: | ---: | ---: | ---: | --- |
| [Orirock Cube](https://penguin-stats.io/en/result/cn/item/30012.md) | `30012` | 10346649 | 6206749 | 166.70% | 7.20 | 2026-10-09 to 2026-10-23 |
| [Polyketon](https://penguin-stats.io/en/result/cn/item/30052.md) | `30052` | 2756418 | 6206749 | 44.41% | 27.02 | 2026-10-09 to 2026-10-23 |
| [Furniture](https://penguin-stats.io/en/result/cn/item/furni.md) | `furni` | 83580 | 6206749 | 1.35% | 890.87 | 2026-10-09 to 2026-10-23 |

Samples: runs of the stage reported in the time range. Loots: total number of the item dropped in those runs. Percentage = Loots ÷ Samples, the expected number dropped per run, which can exceed 100%. Sanity Required Per Item = Sanity ÷ Percentage. Time Range: since the drop table of the stage last changed.

Updated 2026-10-24 02:51 (UTC+8). [Full data (JSON)](https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=CN&stageFilter=act52side_04&show_closed_zones=true). License: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)