This thread is resolved. Here is a description of the problem and solution.
Problem:
The client is working on translating a site into traditional and simplified Chinese and plans to use Google Fonts Noto Sans TC and Noto Sans SC. However, Google Fonts do not load reliably in mainland China due to most of the fonts.googleapis.com and fonts.gstatic.com domains being blocked, resulting in slow loading or broken text rendering.
Solution:
We confirmed that Google Fonts indeed do not work reliably in China. To ensure fonts load properly for a Chinese audience, we recommend self-hosting the fonts. The client has already downloaded local .ttf versions of Noto Sans TC and Noto Sans SC, converted them to .woff2 format using Google Webfonts helper - A Hassle-Free Way to Self-Host Google Fonts, and uploaded these as custom fonts in the Avada theme. This approach is suitable for audiences in China.
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