Sorry about that, the project files no longer come with the launcher. In v4.0 they are downloaded automatically, but in 3.8 and earlier you can get them here:
Spine: Example Projects
很抱歉，项目文件不再与启动器一起提供。在4.0版本中，它们会自动下载，但在3.8和更早的版本中，你可以在这里获得它们。
Spine: Example Projects
