Spring Flowers Called Viola

I have seen these colorful blooms in Shanghai, China in the beginning of the second quarter of last year. 

Violas at Nanjing Road, Shanghai

It was the start of Spring, hence these pretties are abundantly blossoming almost anywhere in Shanghai. I actually posted them before and just called it “Spring Flowers” because I do not know the name.

Violas at the entrance of Oriental Pearl Tower in Shanghai

Until, today when I google for “violas for students”. I was expecting for classical instruments because that’s the only Viola I know. Then I saw these flowers, the flowers I have only seen in China for the first time in my life and they are indeed spring flowers but this time with a name called “Viola”.