Noto Sans HK
Google Fonts · Google · 2012

A comprehensive Traditional Chinese sans-serif covering Hong Kong standards with a broad weight range suitable for digital and print use.
About
Noto Sans HK is designed to eliminate tofu — the blank rectangles that appear when a system lacks a required glyph — across Traditional Chinese as used in Hong Kong, alongside Latin and Cyrillic. Its nine weights make it adaptable for everything from body text in apps to bold editorial headlines. It is a reliable workhorse for any project requiring consistent multilingual typographic coverage.
Classification
Part of Google's Noto superfamily, designed to provide harmonious coverage of Traditional Chinese (Hong Kong standard) alongside Latin and Cyrillic scripts. Offers a full nine-weight range for versatile typographic use.