(traditional) cwTeX Q Kai
cwTeX Q Kai Ti (中楷體) is a calligraphy style traditional Chinese font that is free to download and you can use it in your commercial works. cwTeX fonts were created by Tsong-Min Wu and Tsong-Huey Wu under the GNU General Public License Version 2 or later. And in 2014, the fonts was released under Open Font License.
Free for personal and commercial use.
Once landed on the Google Drive, you will see 4 files. Click on the bottom link (which is the latest version) to start the download. It includes all 5 different fonts from cwTeX.