Lüshi Chunqiu
The Qin period's encyclopedia Lüshi Chunqiu mentioned the name "Yueluo" 越駱 (SV: "Việt Lạc"), which Han period's scholar Gao You asserted to be a country's name (國名).. However, neither "Lüshi Chunqiu" nor Gao You indicated where Yueluo was located.