Oh hell NO! You don't need a license to sell homemade crafts. YOu can make all the cards you want and nobody can do a thing about it. You see there are small businesses like your and bigger businesses like the kinds that need a store. 

Your business fits under the small business that doesn't require space to sell. Hell you can even do it online. YOu think people on ebay need a license to sell? Well, there you go!

no,you needn't.And as 99Silva said,you can also sell it online,taobao is not a bad choice.

Thanks.

Umm... I may be wrong, but I think you do need a license.  Especially if you are trying to sell anything in China.

You know all those wanna-be cops that get into constant fights with the vendors on sidewalks and bridges?  One of the reasons is because they don't have a license to sell things.

Without a license, how does the government get their taxes on the sales?  How does the buyer obtain any recourse if a transaction goes wrong?

And since you are in China, it is illegal for any foreigner to do ANY kind of work without a proper visa and work permit.

Now... All that being said... Will anyone actually care if you are selling homemade cards?  Probably not.  Unless someone wants to use it against you.  Then see how fast they will care.

Yes, technically you need a business licence because, no matter what way you try to wrap it up, you are making and then selling something at a profit. By definition, you are engaged in business activities. However, is it any different from

Yes, technically you need a business licence because, no matter what way you try to wrap it up, you are making and then selling something at a profit. By definition, you are engaged in business activities.

However, is it any different from teachers that do part time tutoring? That is also technically illegal but people do it. It is one of those grey areas that is better just to keep your mouth shut and operate on the quiet. I am not sure that bringing it up on public discussion forums will help your cause much.