Which is the biggest Hong Kong bank?

I'm curious to know, which bank in Hong Kong holds the title of being the largest? When we talk about "largest", are we referring to the number of branches, total assets, or perhaps market capitalization? I'm also interested in learning about the bank's historical background, its influence in the Hong Kong financial landscape, and any notable achievements or landmarks it may have reached. Could you please provide a brief overview of this esteemed institution, highlighting its key characteristics and why it stands out as the biggest bank in Hong Kong?