The East Asian rainy season, commonly called the plum rain (Chinese: 梅雨, méiyǔ; Japanese: 梅雨, tsuyu, baiu; Korean: 장마, jangma), is caused by precipitation along a persistent stationary front known as the Meiyu front for nearly two months during the late spring and early summer between eastern China, Taiwan, South Korea, and Japan. The wet season ends during the summer when the subtropical ridge becomes strong enough to push this front north of the region.