In 416, the Jin general Liu Yu launched a major attack on Later Qin, intending to destroy it. As part of Liu Yu's force, a fleet commanded by the general Wang Zhongde (王仲德), approached Northern Wei's only main outpost south of the Yellow River, Huatai (滑台, in modern Anyang, Henan), the Northern Wei general Yuchi Jian (尉遲建), apprehensive of the Jin forces, abandoned Huatai and fled back north of the Yellow River. Emperor Mingyuan executed Yuchi and then sent messengers to rebuke Liu Yu and Wang Zhongde, both of whom restated that the target was Later Qin, not Northern Wei, and that the city would be returned as soon as the campaign was over. (However, Jin did not actually return Huatai, and Northern Wei would not have a major presence south of the Yellow River again until 422.)