Everthing has two sideness. for example the swagger of Lin dan. when there is in trouble he is easily annoyed. however thanks to his swagger makes him always being succeful.
Coin has two sides. Like high-handed Lindan, who is easy to be wrathful when meet something, just with the high-handed attitude,builds his every success.
There are always two sides to everything.As regards to Lin Dan,his domineering character makes him quick-tempered while nothing successful is ever achieved without that character.