Complex sentence: Eu Tong Sen ran a chinese medicine shop known as "Eu Yan Sang" which was established in 1910 and refurbished in 1990 and reopened in 1992 and run by Richard Eu who is the seventh son of the former.
Split into simpler sentences: Eu Tong Sen ran a chinese medicine shop known as "Eu Yan Sang" which was established in 1910 and refurbished in 1990 and reopened in 1992. It is run by Richard Eu who is the seventh son of the former.