Ruzi Ying
Ruzi Ying (; 5 – 25), also known as Emperor Ruzi of Han and the personal name of Liu Ying (劉嬰), was the last emperor of the Chinese Western Han Dynasty from 6 CE to 9 CE. After Emperor Ai of Han and Emperor Ping died without heirs, Wang Mang chose the youngest of the available successors in order to maintain his power in the government. The child Ying was soon deposed by Wang Mang who declared the Xin Dynasty in place of the Han. During Xin Dynasty, Ying was under effective house arrest—so much so that as an adult, he did not even know the names of common animals. Before and after the Xin Dynasty was overthrown in 23 CE, many ambitious people claimed to be restoring the Han dynasty. In 25 CE, a rebellion against the temporary Gengshi Emperor used the former Emperor Ruzi as a focus, and when the rebellion was defeated, he was killed. He is often viewed as an innocent child who was the victim of tragic circumstances. (The expression "Emperor Ruzi" is a misnomer, as he never assumed the throne and was only named crown prince. Nevertheless, he is commonly referred to as such.)
Han (Korean surname)
There is a controversy on where Gija is from, which is believed to be from the Chinese Shang Dynasty, Gija as a paternal uncle (or brother) of the last emperor of the Chinese Shang Dynasty, King Zhou, however it is likely that Gija is a Dongyi, a native people in the East of China. Gija's and his descendants were also believed to have the surname Han (韓) as King Jun of Gojoseon the last King of Gojoseon and descendant of Gija claimed himself as the King of Han (한왕; 韓王) with the foundation of Mahan part of the Samhan after fleeing from Wiman. With this it shows that the surname Han may have existed since the time of Gija Joseon or Gojoseon and establishes the Han (韓) clan as the oldest surname in Korea dating back to around 5000 years ago, and to have founded and ruled Gojoseon and Mahan.