Opening a Mahjong business. Does 熬云 sound like a business name? Have no idea what a normal Chinese business name sounds like
To me as a native speaker, there is a negative feeling about 熬. It means getting through(or endure) bad things(etc. pain, poor, sickness).
see 熬's meaning here

So maybe 熬 is just not the best choice. But considering your ID as "A O", you may like this "ao" sound very much. So my recommendation is to use 鏖 instead.(see 鏖's meaning here). It basically meaning a really long battle. As Mahjong is a really long battle on the table. Hope this helps.