I am Ligia Diniz from Brazil. Using cnpinyin.com is one of the best experiences ever for me.  I have nothing but good things to say about my learning experience on this site. A great tool found by me and a great option if you are looking to learn Chinese. Its wide range of products will give you all the learning resources in one place. My Chinese language improved dramatically using this interactive platform. Thanks to the cnpinyin team to provide such kinds of free tools with innovative idea.