The end of the war signalled new opportunities. Mun Sen became a prolific artist and exhibited widely in Singapore and across Malaya. Mun Sen became well-known through his exhibitions not only in Malaya and Singapore but also through foreign contacts in Britain, U.S.A. and Australia. In 1947, it was reported that 7 of Munsen's works were exhibited in the Cleveland Students Poster Art Exhibition and an Art Museum at Cleveland.

1972. Pameran Peringatan Yong Mun Sen/ Yong Mun Sen Memorial Exhibition. Exhibition catalogue 17 March - 4 April. Kuala Lumpur: Balai Seni Lukis Negara/National Art Gallery; 1948. "Art Exhibition." The Straits Times, 9 April 1949, pg 7.

1948.Artist's Paintings on Show." Malaya Tribune, 1 May 1948, pg. 3.
https://eresources.nlb.gov.sg/newspapers/Digitised/Article/maltribune19480501-1.2.42?ST=1&AT=search&k=yong%20mun%20sen%20cleveland&QT=yong,mun,sen,cleveland&oref=article

1947. "Penang Artist Impresses U.S." Malaya Tribune, 22 July 1947, pg. 6 https://eresources.nlb.gov.sg/newspapers/Digitised/Article/maltribune19470722-1.2.63?ST=1&AT=search&k=yong%20mun%20sen%20cleveland&QT=yong,mun,sen,cleveland&oref=article
 

An exhibition of Mun Sen's watercolour paintings were featured at the Victoria Memorial Hall from 14-17 July 1947. In an article by the Morning Tribune, it is mentioned that most of the works were paintings of the fishing village of Tokong. 2 sets of photographs from the British Landscapes of Public relations were also featured during the exhibition.

1947. ART EXHIBITION. The Singapore Free Press, 11 July 1947. https://eresources.nlb.gov.sg/newspapers/Digitised/Article/freepress19470711-1.2.30.9?ST=1&AT=search&k=yong%20mun%20sen&QT=yong,mun,sen&oref=article 1947. "Exhibition of Water Colours". Morning Tribune, 11 July 1947, pg 3. https://eresources.nlb.gov.sg/newspapers/Digitised/Article/morningtribune19470711-1.2.25?ST=1&AT=search&K=mun+sen&P=2&Display=0&filterS=0&QT=mun,sen&oref=article

On 11 October 1947, Nanyang Siang Pau (南洋商报) reported that Yong Mun Sen held a solo exhibition at a community centre along Tai Ping Oriental Street (太平東方街公共聨絡部氏聚館), displaying more than 100 paintings.

1947. "Yong Mun Sen holds art exhibition [楊曼生舉行畫展南洋] . Nanyang Siang Pau (南洋商报), 10 October 1947. https://eresources.nlb.gov.sg/newspapers/Digitised/Article/nysp19471010-1.2.92?ST=1&AT=search&k=%E6%A5%8A%E6%9B%BC%E7%94%9F&QT=%E6%A5%8A,%E6%9B%BC,%E7%94%9F&oref=article