This is a very famous tea in Qingdao which I tired various versions of when there.
This one is a top-pick though. My favorite character in green tea is sweet ‘huigan’ and umami flavors that linger long after each sip, but these often wash out rather quickly and green tea can become ‘flat’ after a few infusions. Usually for such teas I brew with far fewer leaves for a just a few long infusions. I find this one lasts gongfu style though, and even returning to the leaves a few hours later for another infusion, it still retains its charm and those lovely flavors I want to find in a green tea.