That day when I was five years old, we met for the first time and I gave him my hand for the first time. His hand was very cold, not as warm as ice. I was startled, and I instinctively wanted to pull my hand away, but he held on tightly, his eyes did not waver at all, and the corners of his mouth still raised in a pleasing way.
"Come, let's play together."
When we met, I called him "Brother Chu Chu", but after that, I never called him that way again. I like to call him by his full name, Mu Chu, Song Muchu.
Of course I didn't know that later on, he really became my brother.