Usually just once, it's tasteless after soaking. However, there is one brand, Tiffany. They have a three-dimensional tea bag, which is very durable and can be brewed many times without losing its flavor. Equipped with a saucer, the shade can be controlled by itself. I used to buy it at Tiffany Tea City, but now I sometimes buy it from JD.COM Taobao on Baidu.