wàn / bāng / lái / cháo / shì / zhōng / guó / gǔ / dài / duì / wài / jiāo / wǎng / de / zhòng / yào / lǐ / yí

万邦来朝是中国古代对外交往的重要礼仪

Having all nations come to pay tribute was an important diplomatic ritual in ancient China.