Fantasy: I'm Really Not an Expert

As a time traveler, Xiao Yu came to a continent of cultivating immortals. Others were riding flying swords and walking with swords, so elegant and unrestrained. However... Xiao Yu was born with a broken vein and was found to be destined to be unable to practice in this life. However, he awakened an alien supermarket system. He usually sells some melon seeds, cigarettes and mineral water. If not, he just sells one or two good-looking clothes. Doesn't life seem good like this? But after selling and selling, he became a big boss? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.