Trouble! Please explain: about fate in numerology.

I give people predictions and personal opinions based on what I have learned, for reference only! Contact again if you don't understand.

He 10 should be lucky, that is, 10-20, 20-30, 30-40. He hasn't turned 30 this year. Besides, it doesn't matter if his luck changes. You should be careful not to throw water or ash in that direction on the day of replacement. Where did your parents see those old sayings? Can they tell fortune? Can you read this book by yourself? This book is too general.