Which is legal process to open a business in Sunday market?

Hello. I'm a foreigner working in the manila with 3 year working visa. I would like to open a stall to sell things in Sunday market. But i've heard that it's difficult to register a business there and they require the one who sell there need to prove that they had successful experience in business before. Anyone who have any info regarding opening a stall in Sunday market and the legal process. Please help to discuss here. Thanks u guys!!  ;)  :D

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