A very wonderful story... I know almost the same story happened in the 1970s.These two boys with the help of their friend who works at the port of Massawa they were able to enter to a ship which they didn't know where it was heading.
After a month the captain came to check his ship,what he found, he wasn't expecting. He found two men hiding and they were starving.
The ship had a stop somewhere in China, he snuck the two men out and them he went back on his ship and left. These two men started their lives in China, they both married Chinese women and started a family.
With this story in mind, I do believe that Pushkin is 25% Eritrean.