CJK characters occupy a vast portion of the printable Unicode characters. [1] Two of the largest blocks include

* U+3400 to U+4DBF

* U+4E00 to U+9FFF

Your string decodes to \u57d2\u6111\u48d4\u6a64\u3930\u3099\u37cd\u7a26\u7366\u0999\u60dd\u44c7\u5f37\u681b\u4ccc\u06ec\u4303\u0329\u4f7c

[1] https://en.wikipedia.org/wiki/CJK_Unified_Ideographs