Your first suit should be either navy blue or gray, possibly with a light chalkstripe (like a pinstripe, but softer), and in an all-season, medium weight.
你的第一套该选海军蓝或者灰色，可能带着浅白色条纹那种(像细条纹，不过更柔和)，四季皆宜，重量适中。
2
In the meeting or gathering related to business or in financial industry the pinstripe and chalkstripe suits are worn very often and strongly favored by many business personalities.