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"Children are born scientists, with their natural curiosity and their strong need to explore the world. And early science exploration is of great importance for them to use and develop skills, laying a foundation for future sustainable development," she added.

"China is unlikely to sign long-term LNG contracts with the US soon, but it is already importing American gas from the spot market," said Wang Lu, an Asia-Pacific oil and gas analyst at Bloomberg Intelligence.

"But the areas of known volcanic activity in Greenland are several hundred miles away. Also, a volcano should have a clear positive magnetic anomaly, and we don't see that at all," said MacGregor.

"China is about three to four years ahead of developed economies including the United States and Europe in terms of intelligent projectors, giving us much confidence to develop abroad," he said.

"Buying jewelry is not the same as buying clothing. At present, the overall jewelry industry does not provide a good try-on experience. We hope to give customers a practical and better experience when choosing jewelry."