thanks a lot for recommendation... both on book and YouTube channel... bought and subscribed. My wife just loves flowering bonsai so we went recently to one place around Shanghai and bought 3! ... and they are old and big. But obviously language (Chinese) becomes super technical when you go into details on varieties of trees (almost always untranslatable) so first of all will need to decide what it really is... than comes everything else.
For now they are wintering with protection... I've seen how they do it here...