Should I get my 4 year old child to learn Hanyu Pinyin (Mandarin phonics)?

I got a book on Shopee for my 3 year old which allows you to press buttons and a Chinese lady teaches all the han yu pin yin phonics sounds. Less than $10. Seriously amazing, and my LO’s Chinese pronunciation improved so much after that. 4 years old isn’t too young to start learning, if your child’s interested. They absorb information like sponges, and pressing buttons is fun too 😂