The annual Smart China Expo has been held twice in Chongqing since 2018.
Regular passenger flights between Chongqing and Seoul resumed on Saturday morning after being suspended for several months because of the COVID-19 pandemic.
Students at Qinghe Tongxin Primary School in Liangjiang New Area had a special agricultural lesson on Wednesday.
Chongqing eyes to be a pioneer in promoting the application of block chain technology.
In 2016, Chang'an installed more than 400 robots on the welding production line at its new smart factory in Chongqing's Liangjiang New Area.