A combination of letters 'c', 't' and 'b' implies the double-strand structure of DNA, as CTB is biology related. 
Collaborated with Xiangwei Zhu, a designer of Microsoft Research Asia.
CTB website : Open in New Window

Adobe Illustrator, Photoshop Source File 
Website layout of CTB, Source File

Left icon: English letters in "AIESEC" combined in Chinese calligraphic style, collaborated with Xiao Li.
T-shirt, logo, posters: Open in New Window.
Weekly newsletter: Open in New Window,

Adobe Illustrator, Photoshop Source File