TEQUILA QUESTION

It is hard to say. As the duty paid is 50%, but the dutible price is not decided by Chinese government. But I can give you some reference. The highest duty among all the alcohol liquid is the XO. Every 750 ml, you have to pay 250 RMB. I think the duty you have to pay cannot be over that.
In my opinion, you had better not take so much, otherwise it will trouble you during the travel.