Chinese Pokémon Set Codes Explained: cs4.5C, CBB4 and the Rest

The single most confusing thing about buying Simplified Chinese Pokémon product for the first time is the naming. English collectors are used to set names — Scarlet & Violet 151, Surging Sparks — and clear set symbols. Chinese product instead lists codes like cs4.5C, cs6aC or CBB4, and listings often quote them with no explanation at all.

Here's how to read them.

The cs-series: main expansion sets

Most Simplified Chinese expansions use a cs prefix followed by a number, sometimes a letter, and a trailing C for Chinese.

• cs4 — the fourth main Chinese expansion
• cs4.5C — a half-step set, equivalent to how English uses sets like 151 between numbered mainline releases
• cs6aC — a lettered sub-set within the sixth expansion block
• cs6bC — the following sub-set in that same block

The pattern mirrors the Japanese approach of numbered blocks with lettered sub-sets, rather than the English approach of distinct marketing names for each release.

The CBB-series: curated and gem packs

CBB codes (as in CBB4, sometimes written CBB4C) denote curated pack products rather than standard expansions — assembled from genuine cards across multiple sets rather than being a single sealed print run of one expansion.

These are legitimate licensed products, but worth understanding for what they are: the contents come from a range of sets, so don't expect the pull structure of a standard expansion box.

Jumbo vs slim: the format matters more than you'd think

Chinese product comes in formats that don't map neatly onto English releases:

Jumbo booster boxes contain packs with substantially more cards than English boosters. When comparing prices, compare cost per card rather than cost per box.

Slim sleeved packs are small, cheap, sleeved single packs — often just a few cards. The most affordable way to try a set.

Exhibition frame boxes bundle a display frame with one or two packs. You're partly buying the frame, so judge them as display pieces rather than value-per-card.

Blind boxes contain a randomised figurine, coin or card. Contents are luck of the draw by design.

How to check what you're buying

Before you buy Chinese sealed product, get clear on three things: the set code, the pack count, and whether the seller states the product is factory sealed and never weighed. A listing that can't tell you the set code is a listing where the seller doesn't know what they're selling.

Every product we list at Celestial Vault names its set and contents where applicable — you can browse the full range of Chinese Pokémon cards, or go straight to sealed booster boxes.