Because he invented the self-striking water clock

Jang Yeong-hui was born in 1952.

Jang Yeong-hui died in 2009.

Jang Yeong-Cheol was born in 1964.

Jang Sin-yeong was born in 1984.

Jang Yeong-sil worked at the Royal Palace of King Sejong in Hanseong, which is present day Seoul. It is not known for certain if he invented the rain gauge or merely adapted an existing device, as rainfall measurement had been known for lots of years before Yeong-sil.

The cast of Dae Wang Sejong - 2008 includes: Moon Chun Shik as Jeon Il Ji Lee Dal Hyung as Shin Jang Kim Ha Kyoon as Heo Jo Chun Hee Lee as Jang Yeong Sil Lee Hyun Woo as Prince Choong Nyeong (later Sejong) Kim Hyung Il as Min Moo Hyul Hyeon Jeon as Lee Chun Park Young Ji as Park Eun

Chun Hee Lee has: Played Jang Yeong Sil in "Dae Wang Sejong" in 2008. Played himself in "Family Outing" in 2008. Played himself in "Running Man" in 2010. Played Kang Dong Soo in "Take Care of Us, Captain" in 2012. Played Cha Seung-pyo in "Dating Agency: Cyrano" in 2013.

Song Do Yeong was born in 1951.

Choe Yeong was born in 1316.

Choe Yeong died in 1388.

Wengyik Yeong died in 2007-10.

Yi Si-yeong died in 1953.

Kim Yeong Seon was born in 1968.

Wengyik Yeong was born on 1966-07-28.

Choi Jin-yeong was born in 1970.

Choi Jin-yeong died in 2010.

Min Yeong-hwan was born in 1861.

Min Yeong-hwan died in 1905.

Min Yeong-chan was born in 1873.

Park Do-Yeong was born on 1993-01-30.

Yun Yeong-Dae was born in 1967.

Park Yeong-hyo was born in 1861.

Park Yeong-hyo died in 1939.

Lee Yeong-duk was born in 1926.

Lee Yeong-duk died in 2010.

Byeon Yeong-tae was born in 1892.

Yeong-yang of Goguryeo died in 618.

Jasmine Yeong-Nathan was born in 1988.

Kim Yeong-cheol was born on February 25, 1953.

Kim Yeong-cheol was born on February 25, 1953.

Yoo Chae-yeong was born on September 22, 1974.

Yoo Chae-yeong was born on September 22, 1974.

Jeong Jin-yeong was born on 1964-10-16.

Noh Seon-yeong was born on 1989-10-19.

Pak Yeong-hun was born on 1985-04-01.

Jo Yeong-wook was born on 1962-01-01.

Hong Yeong-Seung was born on 1962-12-09.

Lee Toong Yeong has written:

'Behind the curtain'

Park Yeong-gyu was born on 1953-10-28.

Byeon Yeong-tae died on 1969-03-10.

Lee Yeong-Rok was born on 1965-01-09.

Lee Hoe-yeong died on 1932-11-17.

Jeong Jae-yeong was born on 1970-11-21.

Lee Yeong-hoon was born on 1982-12-14.

Narasingha Sil was born in 1937.

SIL International was created in 1934.

Sil Austin was born in 1929.

Sil Austin died in 2001.

Karu-Sil was created in 2007.