The iconic "杭" — Hangzhou's official logo — has been trending on social media lately. Fun fact: it was originally selected by public vote in 2007 after being designed by architect Xie Jianjun and his team. The version we know today was finalized with the artistic touch of master calligrapher Han Meilin and an expert panel. Proof that good design is a collective effort. [Photo/Dongdao]