It turns out that Dongfanghong Cinema has a cooperation with China Merchants Bank. Use a China Merchants Bank credit card to purchase tickets, buy one and get one free. I don't know if it is still available now.

I have never heard of discounts using credit cards in other movie theaters.

Each movie theater has its own membership card. The card fee is usually 10 yuan, and you can get a 20% discount when using the card. In this way, it is generally more cost-effective for two people to go and get the card than to buy two directly.

Student fare is generally 25, which is slightly higher than half price.

Tuesday is a nationwide sale. Usually 10 yuan cheaper than the original price.

Join some movie theater groups, and during events, tickets may be half price. For example, last time for Transformers 2, my group offered 28 yuan.