Cipher & Code Breaking Competition

Cipher & Code Breaking Competition, often abbreviated as CCBC, is the oldest puzzlehunt in Chinese. The old name for CCBC was Cipher & Code Bar Competition because the first CCBC was held by SEVENKING who was the administrator of Baidu Cipher Bar in 2008. This name was used until CCBC X, the 10th iteration of CCBC. Due to the reduced correlation between CCBC and Baidu Cipher Bar, the name was changed from 'Bar' to 'Breaking'. Now it is held annually in August with a max team size of 5. It is mainly designed for Chinese puzzle solvers but also friendly to non-Chinese puzzle solvers.