Unlike Source Han Sans / Noto Sans CJK Version 2.000 that supports five default languages, these test fonts support a sixth. This sixth language is a third flavor of Traditional Chinese, for Macao SAR ...
The site with all tests is live here. All tests run either on page load or provide instructions on how to run them. If you are working on a simple page you can start any local server (e.g. python3 -m ...