Egg tarts are not sold in Lanzhou. I have searched all over the city. My egg tarts were made successfully during the Spring Festival this year, but Tapi was sent by mail from other places on Taobao. It was still in winter, and it was still good to send it to Tapi after adding ice packs. But now the shopkeeper says it can't be delivered, and it's afraid of being broken. Another problem is that whipped cream is not sold in Lanzhou, at least I haven't found it. I don't know if you have found it. I also bought Nestle's 355ml from the Internet, and the effect is not bad. Another thing to say is that Tapi doesn't know if you tried it. I did it once according to the online formula and steps, but I failed because of too much water, so I didn't have the courage to try it again. I plan to continue mail order when the weather gets cooler.