Is the park still closed to foreigners? The website does not mention anything.

Importance News - Jiuzhaigou Park, Mt. Siguniang Parks and Huanglong Park, Dagu Glacier Park are open to foreign travelers from May 2021. Requirements are:
01. Foreigners who live/work in China and has proof of residence/work.
02. Local Tianfu health QR green code.
03. Visitors from Guangdong province (or have been to Guangdong lately) need to have Nucleic Acid Test made in past 48 hours.