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Customs officers in South China's Guangdong province seized more than 24 million items that infringed on intellectual property rights in 2019.

Currently, in-flight Wi-Fi mostly relies on the KU band, which makes it susceptible to instability and lost connections during a flight, especially when the airplane is flying over oceans. Such Wi-Fi service is acceptable for sending text messages and photos, but not ideal for, say, watching videos.

Cuban President Miguel Diaz-Canel and Minister of Foreign Trade and Investment Rodrigo Malmierca were present at the opening ceremony of the five-day trade fair, which drew companies from about 60 countries.

Customers have included the London Philharmonic Orchestra, the Royal Military School of Music, the Count Basie Orchestra, the Berlin Opera and the US and Norwegian armed forces.

Cui said schools can download and use a number of online teaching aids designed for children of different ages produced by NGOs and voluntary organizations.