I've been reluctant to comment on this one but here goes. I planted tsu li and ya li pears around 10 yrs ago. I'll check my orchard map, but one died of fire blight within a few years. I replaced that one and it isn't going to make it either. The other one is the best looking pear I have. Big, We'll filled out, but no flowers yet. I have a keiffer as well, and it has made some sparse fruit. I think it will pollinate the ..li.. I still have if it ever flowers. I think it's too late this year to get viable scion material, but I'll send some next year of the keiffer or the ..li.. If you want.