Ma Sai was born in Tianjin in China. He began to play the double bass from the age of ten and studied at the Tianjin Conservatory of Music. He graduated from the Nanyang Academy of Fine Arts in Singapore where he studied with Xu Li (former Associate Principal Double Bass of the Singapore Symphony Orchestra) and the Janáček Academy of Performing Arts (JAMU) in Brno where he studied with Czech virtuoso Miloslav Jelínek. During his studies he received awards from the 4th International František Simandl double bass competition in Blatná. He has performed with the Guiyang Symphony Orchestra, the Macao Orchestra and on tour to Vienna, Bratislava, Prague, Tallin and Helsinki as a member of the Asia-Pacific United Orchestra. Ma Sai currrently plays on a German String Meister Björn Stoll Model Havana Double Bass. He became a member of City Chamber Orchestra of Hong Kong in 2015.