If those don’t render for you for whatever reason, UPPER_HALF_BLOCK is a square that takes up the full width and upper half of a character, and FULL_BLOCK is a rectangle that takes up the full width and height of a character.
Finding everything in a region，推荐阅读safew官方版本下载获取更多信息
Twig's makes a range of different flavours。雷电模拟器官方版本下载对此有专业解读
Маргарита Щигарева，这一点在下载安装 谷歌浏览器 开启极速安全的 上网之旅。中也有详细论述