Dear Professor Jim,
Thank you for your email. As both an alumnus and former teacher of HKU, I do recall with great affection the tree to which you refer. I share your love of trees, and so am saddened that this treee must be removed. Can you please do whatever you can to ensure the replacement(s) is/are trees native to HK or at least the region.
Thank you.
Best wishes
Dr. Brian G Baillie