Overnight public bus from Chengdu to Jiuzhaigou?

There is no overnight public bus from Chengdu to Jiuzhaigou. Usually, the buses leave in the morning and take 10 hours to get to Jiuzhaigou before night. There is no 2-day pass in Jiuzhaigou. The entrance fee is CNY220 from Apr.1 to Nov.15 and avlid for one-time entry. If you would like to visit Jiuzhaigou again, you should purchase a ticket one more time.