你們有沒有想過,，為什么長沙能成為年度最具幸福感的城市？今天,，就讓我?guī)銈円黄鸾颐亻L沙的幸福密碼,！

Have you ever wondered why Changsha can become the city with the highest annual happiness index? Today, let me take you to uncover the happiness code of Changsha together!