During a 20-year career in China with ad agency JWT, Tom Doctoroff emerged as one of the leading authorities on the country's marketing landscape. In conversation with Arun Sudhaman, Doctoroff discusses why Chinese brands still struggle overseas, focusing on the specific case of Huawei. He also explores how China's young consumers are both changing and staying the same. Three years after leaving the holding group world, meanwhile, Doctoroff also examines the pressure on big agencies.