Gwoyeu Romatzyh
This was significantly different from all other romanization schemes in that, from the very outset, it was intended that the Latinxua Sin Wenz system, once established, would supersede the Chinese characters. They decided to use the Latin alphabet because they thought that it would serve their purpose better than Cyrillic. Unlike Gwoyeu Romatzyh, with its complex method of indicating tones, Latinxua Sin Wenz system does not indicate tones at all.