The outcome of clip curve doesn't show symmetry?
Hi @Ho_Albert Welcome to ZBrush Central.
Your not showing the Symmetry controls in your screenshots, but you probably don’t have Mirror Symmetry enabled.
Also, the latest version of ZBrush is 2021.1.2 and you are still using ZBrush 2020. You are missing out on bug fixes and the latest enhancements. You should upgrade to the latest version as older versions are not supported. Upgrades are free to registered users.