Every other translation of LOTR into Chinese, from both Mainland China and Taiwan, has the title 魔戒 (mó jiè), "Lord of the Rings". These are shown at the main Chinese page. One new 2025 translation from Mainland China in Simplified characters, however, has the title 指环王三部曲 (zhǐ huán wáng sān bù qū), "Lord of the Rings Trilogy". 魔戒 isn't used anywhere for "Lord of the Rings" in this translation. 指环王 is the "Lord of the Rings" part of this title.
Simplified Characters
指环王三部曲 (Chinese [Simplified] S), purchased on-line from superbuy.com in 2025 (hardback)