未来中流砥柱！揭秘车展十大爆款SUV身世之谜

Photo shows Tianchi Lake. (People's Daily Online/Li Yang)

百度 　　本报联合国3月21日电（记者殷淼）世界知识产权组织21日发布的报告显示，2017年中国已成为《专利合作条约》框架下国际专利申请的第二大来源国，仅排在美国之后。

As the Summer Solstice approaches, much of China is already experiencing a sweltering heatwave. Yet Changbai Mountain in northeast China's Jilin Province remains refreshingly cool. After being frozen for more than seven months, the ice on the mountain's Tianchi Lake is now gradually melting, and its clear waters are about to reappear.

Widely regarded as Jilin's premier tourist attraction and a shining symbol of Chinese eco-tourism, Changbai Mountain is home to one of the world's most remarkable crater lakes. Nestled within the volcanic cone at the mountain's summit, Tianchi Lake is the world's highest, largest, and deepest crater lake formed by an active volcano. In winter, its icy surface gleams like white jade, while in summer, it transforms into stunning sapphire blue, making it a marvel of nature.

Intern Geng Yujie contributed to this story.

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