BookA Letter to All of Furnace Core Base
A Letter to All of Furnace Core Base is a 1★ material in Honkai: Star Rail — see how to get it, its use, and related items right below on this page.
A Letter to All of Furnace Core Base is a material ★1 in Honkai: Star Rail. This item is not currently used to level up any character or Light Cone.
Last updated: 30/07/2026
The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.
Read the full text
One of the pages belonging to "A Letter to All of Furnace Core Base". Read the full text in the Library.
Read this chapter in full in the Library →
Stats
| Rarity | ★ |
| Type | Book |
Official names in every language
| Tiếng Việt | Bức Thư Gửi Đến Toàn Thể Căn Cứ Lõi Trung Tâm |
| English | A Letter to All of Furnace Core Base |
| 日本語 | 「炉心」基地全員への手紙 |
| 한국어 | 「노심」 기지 전체에 보내는 편지 |
| 繁體中文 | 致「爐心」基地全體的一封信 |
Same-type items
FAQ
What is A Letter to All of Furnace Core Base?
One of the pages belonging to "A Letter to All of Furnace Core Base". Read the full text in the Library.
Where do you get A Letter to All of Furnace Core Base?
Official drop/source data for A Letter to All of Furnace Core Base isn't published yet — check back after the next data sync.
What type of item is A Letter to All of Furnace Core Base?
A Letter to All of Furnace Core Base is a 1★ material in Honkai: Star Rail, in the “Book” category.
What is A Letter to All of Furnace Core Base used for?
A Letter to All of Furnace Core Base currently isn't listed as required by any character ascension, Light Cone ascension, or crafting recipe in official data.