Lucky Dog is from the US. Yesterday Lucky Dog went to Beijing. He visited Tian'anmen Square (广场). He went there by bus. It was very interesting. He met Brave Dog there. Brave Dog is a Chinese dog. They talked happily (愉快地) with each other. But Brave Dog could not speak English. What language (语言) did they speak? Do you know? Guess! The dogs always talk in dogs' language!