Tien-sing or Tiong Sing, originally named Chin-ou (金甌) and sometimes referred to as Jinou, was an ironclad flat-iron gunboat built for the Imperial Chinese Navy. She was completed in 1875 at the Kiangnan Arsenal, the first time an ironclad had been constructed in China. She was built out of spare components, prior to the construction of a purpose built yard for ironclads. Tien-sing was modified part way through construction to allow it to undertake a sea voyage to Hai River, but instead was only ever used on the Yangtze and Huangpu Rivers. She was still in operation in 1902, having survived the Sino-French War and the First Sino-Japanese War.