festive and solemn, formal ☊ 
long trọng ☊ 
庄严 → ☊ zhuang1yan2 stately ☊ Long trọng ☊ 庄重 → ☊ zhuang1zhong4 grave; solemn; dignified ☊ Long trọng ☊ 郑重 → ☊ zheng4zhong4 serious; solemn ☊ Long trọng ☊