青 (qīng) can mean “blue” or “blue-green” or what anthropological linguists dub “grue“. 海 (hǎi) means “sea”. 青海湖 (Qīnghǎi hú) means “Blue-Green Sea Lake” which is redundant, but helps differentiate the lake from the surrounding province which bears its name.
In Xining I had arranged a driver for the day to circumnavigate Qinghai Lake, the largest lake in China. You can spot it clearly on just about any globe or map of Asia.
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