Solve the problem of Chinese font display in Mac version Firefox

The two days are plagued by Firefox's Chinese font display problems under the Mac. In Firefox, set the Sans-serif font to the SIMSUN-EXTB (new Arial) or English font (this will use the Mac default Chinese font), as shown in the following figure:

When browsing the website of the garden, the Chinese fonts displayed are strange and ugly, see the picture below. The same settings in Chrome, the fonts displayed are completely different.

(the image shown in Firefox shows the effect)

(The above image shows the effect in chrome)

Baffled, and then went to Apple's official website looked at, found that there is no such problem, carefully observed, and found the difference between the HTML:

Then in our website page add lang= "ZH-CN", the problem is solved.

<! DOCTYPE html>

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