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"First, it's better to avoid some places, such as large gatherings of people," which provide attractive targets to those who wish to carry out an attack, he said.

"Future? I don't think much about it, just passing each day as it is," he said.

"From city planning to heritage protection, China has improved its condition by learning and by self-innovation in the past 40 years," said Zhao. "And more importantly, the Chinese people and American people have built a cherished friendship and mutual trust — that's the foundation of broader collaboration between the two great nations.

"For example, animal welfare is ensured in most slaughterhouses in China, where pain-free means of slaughtering, such as using carbon dioxide, have been commonly adopted," she said, adding that welfare practices need to improve in some other parts of the animal industry, such as transport.

"Good quality Wi-Fi in the air is changing the way people think about flying. Whether using the time to work, to connect with friends and family, or to pass the time shopping or viewing entertainment, the availability of in-flight broadband has become a major factor when choosing an airline. It's clear the opportunity that connectivity presents to airlines cannot be underestimated."