悠然 from China:
flower chess board with hidden wallet (Zhen Xian Bao)
悠然 from China:
three cranes
悠然 from China:
crane snowflake designed by 悠然
悠然 from China:
eight-crane box designed by 悠然
悠然 from China:
Sonobe embellishments By Peter Keller
悠然 from China:
self-similar squares designed by 悠然
悠然 from China:
comparisions
悠然 from China:
confusing light
悠然 from China:
Three Eight-Pointed Stars
悠然 from China:
Stacked Eight-Pointed Star
悠然 from China:
Eight-Pointed Star
悠然 from China:
Double Eight-Pointed Star
悠然 from China:
photoframe designed by 悠然
悠然 from China:
four photoframes
悠然 from China:
star cluster
悠然 from China:
IOIO TASK 6
悠然 from China:
Binary Tree II designed by 悠然
悠然 from China:
IOIO 2016 Task 11 & 12
悠然 from China:
IOIO 2016 Task 13
悠然 from China:
IOIO 2016 task 5 Rest In Peas
悠然 from China:
IOIO 2016 Task 9
悠然 from China:
IOIO 2016 Task 10 & 7
悠然 from China:
IOIO Task 3 Papageno
悠然 from China:
IOIO 2016 Task 4 Samurai Helmet
悠然 from China:
IOIO 2016 Task 8
悠然 from China:
IOIO 2016 Task 1 Heart with a Swan
悠然 from China:
binary tree before folding
悠然 from China:
IOIO 2016 video by 悠然
悠然 from China:
Proof Without Words----Every Triangle Can Be Subdivided into Six Isosceles Triangles
悠然 from China:
proof without words -- the summation of positive integral odds
