Twelve Letters·Tencent Video
All episodes
1 season · 12 eps
Season 1
Love Letter Episode 2
Time and the Youth Episode 3
I Want to Give You Sunny Day, But I Only Have An Umbrella Woven from Storm Clouds Episode 4
Hello, Stranger Episode 5
Family Episode 6
A Xun? I'm Here Episode 7
The Spring is Bright, But Gone Forever Episode 8
If..... Episode 9
Fate Episode 10
Reunion in Spring Episode 11
Twelve Letters Episode 12
12 episodes in Season 1
Some details come from TheTVDB.