Jin Woo Tianxin District Boxing Hall. Boxing dynamometer is a kind of equipment used to measure the punch strength of players, which is used before training or competition. Jin Woo Boxing Hall in Changsha has boxing dynamometer, and Jin Woo Boxing Hall in Changsha opened in 2005. It is a fashionable place of boxing, Muay Thai and fighting in Changsha, with new equipment and a new coaching team. It is a regular boxing gym approved by Changsha Sports Bureau and Industrial and Commercial Bureau, and is sought after and reported by major media in Changsha, including Hunan Satellite TV.