'Cloud Thunder'), abbreviated as YL or prefixed with CS/BB,[1] is a series of precision-guided munitions (PGM) and special-purpose bombs developed by China South Industries Group.
Factory 624, later known as the Harbin Jiancheng Group, a subsidiary of Norinco, began the development process in 1974, with prototypes completed in 1980.
[2][4] Eventually, the original LS-500J branched out to the other series of guided bombs,[2] which were manufactured by different defense factories and institutions:[1] In Zhuhai Airshow 2012, China South Industries Group revealed Yunlei / YL (Chinese: 云雷; pinyin: yún léi; lit.
[20][21] During a showcase by Chinese state-owned China Central Television (CCTV) in 2020,[20] the CS/BBC5 (YJ-6) was shown to have six tail strakes for increased aerodynamic control.
[23] Guided bomb variants produced by China South Industries Group include:[16][24]