China establishes over 30,000 smart factories: ministry
Manage episode 468281023 series 1105722
①China establishes over 30,000 smart factories: ministry
②Chinese scientists unveil aerial/terrestrial robot prototype for Mars exploration
③China to implement comprehensive tagging system for ancient, notable trees
④New insect species found in south China urban wetland
⑤A Thousand Whys: Flower Festival - an ancient celebration remembered
122集单集