An international expo on big data opened Saturday in southwest China's Guizhou Province, attracting over 40,000 participants from nearly 30 countries.

Focusing on the latest technological innovation and achievements, the four-day China International Big Data Industry Expo 2018 in the provincial capital of Guiyang will be attended by 388 exhibitors, according to the organizing committee.

The expo will include a summit on e-commerce innovation and development, eight panel discussions and more than 50 forums. Covering some 60,000 square meters, the expo's exhibition zones are dedicated to state-of-the-art technology, hardware, digital applications and experience, and startups.

The expo will also feature a global competition on big data and artificial intelligence.