Old Scholars are writing Vietnamese Calligraphy on Lunar December 21st annually at the Big House which is called as Long Son Big House, also known as Ong Tran Temple, is a national cultural and historical monument of Long Son island commune, Vung Tau city that was built between 1910 and 1929. Long Son Big House is not only a famous spiritual destination for locals but also preserves many architectural and cultural values for Vietnamese so far.