---
title: "Skill Summary - 2 Drop Rates (CN server)"
description: "Skill Summary - 2 drop rates on the CN server: CA-3 300.00% (23,356 samples), CA-5 150.03% (16,589,758), CA-4 100.00% (34,991); 3 stages in total. Updated 2026-10-23. Crowdsourced Arknights drop data by Penguin Statistics."
lang: en
server: CN
item_id: "3302"
as_of: 2026-10-23T14:31:59Z
time_zone: UTC+8
rows: 3
rows_total: 3
canonical: "https://penguin-stats.io/en/result/cn/item/3302"
api: "https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=CN&itemFilter=3302&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"
---

# Skill Summary - 2 Drop Rates (CN server)

Server: **CN server** · [US server](https://penguin-stats.io/en/result/us/item/3302.md) · [JP server](https://penguin-stats.io/en/result/jp/item/3302.md) · [KR server](https://penguin-stats.io/en/result/kr/item/3302.md)

Drops of Skill Summary - 2 by stage on the CN server, by percentage, highest first: 3 of 3 stages

| Stage | ID | Loots | Samples | Percentage | Sanity Required Per Item | Sanity | Time Range |
| --- | --- | ---: | ---: | ---: | ---: | ---: | --- |
| [CA-3](https://penguin-stats.io/en/result/cn/stage/weekly_6/wk_fly_3.md) Aerial Threat | `wk_fly_3` | 70068 | 23356 | 300.00% | 6.67 | 20 | 2019-05-01 until now |
| [CA-5](https://penguin-stats.io/en/result/cn/stage/weekly_6/wk_fly_5.md) Aerial Threat | `wk_fly_5` | 24889443 | 16589758 | 150.03% | 20.00 | 30 | 2019-05-01 until now |
| [CA-4](https://penguin-stats.io/en/result/cn/stage/weekly_6/wk_fly_4.md) Aerial Threat | `wk_fly_4` | 34991 | 34991 | 100.00% | 25.00 | 25 | 2019-05-01 until now |

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 2026-10-23 22:31 (UTC+8). [Full data (JSON)](https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=CN&itemFilter=3302&show_closed_zones=true). License: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)

## Related Items

- [Skill Summary - 3](https://penguin-stats.io/en/result/cn/item/3303.md) `3303`
- [Skill Summary - 1](https://penguin-stats.io/en/result/cn/item/3301.md) `3301`