Adoptee from China (1974) searching for birth family

I'm an adult adoptee searching for my biological family. I was born in Changsha around 1974 and placed for adoption shortly after birth. The adoption was arranged through a local orphanage. My adoptive parents traveled to Changsha to bring me home. Growing up, I always felt something was missing. Not love — my adoptive family gave me plenty of that. But identity. Where do my eyes come from? My laugh? My stubborn streak? These are questions only my birth family can answer. Recently I started searching in earnest. Social media, DNA databases, adoption reunion registries — I'm casting as wide a net as possible. If you are my birth father, or if you know someone from Changsha who placed a child for adoption around 1974, please know: I am doing well. I am at peace. I would love nothing more than to know you, but I respect whatever boundaries you need. The holidays are the hardest — their empty chair at the table speaks volumes.