The symbol of Chengdu Metro has evolved from six images: galloping train, flying brocade, continuous Shu mountain, gentle waves and curved tunnel. Logo lasted six months from design to finalization, meaning: "Bashan and Shushui are beautifully woven, and subway life is coming." The gap on the sign is like a curved rail, like a flying brocade, like a continuous mountain of Shu, and the negative is like a soft spray. From the perspective of design strategy, from the perspective of cities and consumers, it means that "Chengdu Metro comes down in one continuous line". The whole sign looks like a speeding train and symbolizes the meaning of endless flow. Choose exquisite blue, with the artistic conception of blue sky and white clouds. Nowadays, subway signs have become a shining business card in Chengdu.