As we entered into Da Han, or “Greater Cold” on Friday, according to the Chinese lunar calendar, the salt lakes in north China’s Yuncheng, Shanxi Province have appeared in different colors as mirabilite crystals come into form when the temperature get as cold as -10°C - -5°C. /VCG photo

As we entered into Da Han, or “Greater Cold” on Friday, according to the Chinese lunar calendar, the salt lakes in north China’s Yuncheng, Shanxi Province have appeared in different colors as mirabilite crystals come into form when the temperature get as cold as -10°C - -5°C. /VCG photo

As we entered into Da Han, or “Greater Cold” on Friday, according to the Chinese lunar calendar, the salt lakes in north China’s Yuncheng, Shanxi Province have appeared in different colors as mirabilite crystals come into form when the temperature get as cold as -10°C - -5°C. /VCG photo

As we entered into Da Han, or “Greater Cold” on Friday, according to the Chinese lunar calendar, the salt lakes in north China’s Yuncheng, Shanxi Province have appeared in different colors as mirabilite crystals come into form when the temperature get as cold as -10°C - -5°C. /VCG photo

As we entered into Da Han, or “Greater Cold” on Friday, according to the Chinese lunar calendar, the salt lakes in north China’s Yuncheng, Shanxi Province have appeared in different colors as mirabilite crystals come into form when the temperature get as cold as -10°C - -5°C. /VCG photo