Doctor Cao Liangliang speaks with an elderly client Zhao Xi'e via Lanchuang's elderly care system at Zhuojing Healthcare Centre, one community medical service provider connected to the company's network in Weifang, Shandong province, China, July 25, 2019. Charging elderly clients just 1 yuan or about 15 cents a day, little-known Lanchuang Network Technology Corp has embarked on one of the most ambitious undertakings in aged care by a private sector firm in China. REUTERS/Jason Lee

An engineer tests a "Xiaoyi" robot, a Siri-like voice assistant, which links the user to Lanchuang's intelligent elderly care system, at the headquarters of Lanchuang Network Technology Corp in Weifang, Shandong province, China, July 25, 2019. REUTERS/Jason Lee

Li Libo, CEO of Lanchuang Network Technology Corp, displays the call center service of his company's intelligent elderly care system on an elderly smartphone prototype, which has partnered with China Mobile Ltd, during an interview in Weifang, Shandong province, China, July 25, 2019.REUTERS/Jason Lee

Zhao Xi'e, 55, chats with her sister as she performs the video chat function provided by Lanchuang's elderly care system during a media visit organised by the company in Weifang, Shandong province, China July 25, 2019. REUTERS/Jason Lee

Elderly men chat at a residential community in downtown Beijing, China July 29, 2019. REUTERS/Jason Lee