Hi,I just 换花,I ask the temple ppl,tell zsnn said u want to 换花,u can either take 1 stalk of white,or either take 2 stalk 1 white or red stalk.bring home put at ur 床头for 7days,the next day the 8 days,bring the flower go to ur blk downstairs throw away.this is the temple ppl say de.