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"China has a social security system for those who are not able to work and offers vocational training, education and job opportunities for them," he added.

"But ultimately ... the data drives that decision. That's where the transmission is. It's not in cafes and restaurants, but it is, in small numbers, in people's homes. One family to another."

"China plays a significant role in our global growth, and we are committed to working with local partners to help advance the country's aviation industry," he said.

"But this is a long-term play that will take perhaps a decade or longer before the appropriate infrastructure is in place and the cost-per-energy-unit is reduced to a level which is competitive with other forms of energies," he added.

"China has not only solved the basic demand for food for nearly 1.4 billion people, but is also close to moving from supplying sufficient food products to providing rich and nutritious diets for its people," he said.