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Twelve Letters hits 21000 on heat index – international viewers also awarding high ratings

Michelle Topham September 2, 2025

21000 on the heat index for Twelve Letters

The just-ended Chinese mini drama Twelve Letters has completed its 12-episode run with a 21000 on Tencent Video’s heat index in China.

Starring Zhou Yi Ran and Wang Ying Lu, the mystery thriller premiered the first of its 12 episodes on August 29th, and released its final episodes on September 1st.

Internationally, the Chinese drama has had quite a muted reception, with under 5,000 people on My Drama List saying they are watching/have watched it, which is a low number for even a C-drama.

That being said, it has received excellent ratings, with 405 users currently rating the C-drama a solid 8.2 out of 10, with their only complaints being that the final four episodes felt rushed while a longer drama would probably have solved that.

Meanwhile, only 21 people using IMDB have marked that they are watching Twelve Letters, but they are awarding the drama a very high average of 9.1 out of 10.

RELATED: Twelve Letters has earned 7.7 on Douban for its opening score, and here’s why that is so good!

Tencent Video announced the news that Twelve Letters had earned 21000 on the heat index with an upbeat poster featuring the two leads, and the comment:

#Twelve Letters Surpasses 21,000 in Popularity on Tencent#

The gears of fate are turning, with tire tracks etching the footnotes of youth.

Starring Zhou Yi Ran (@周翊然Tz) and Wang Ying Lu (@王影璐_) (names listed in no particular order).

What other pure romance stories await? 

You can watch all episodes of Twelve Letters on WeTV internationally now.

About the Author

Michelle Topham

Michelle Topham

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British-American journalist currently residing in Vienna, Austria and obsessed beyond measure with C-dramas, a subject I have been writing about for more than two decades. How many C-dramas have I watched? Many many hundreds. How many are still in my backlog? Hundreds more.

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Tags: Chinese Thriller Douban heat index Tencent Video Twelve Letters Wang Ying Lu Zhou Yi Ran

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