在1981年，宏船长老发起了金刚法会以吸引当时宏茂桥新镇的居民学佛。他带领新加坡佛教总会在1983年在光明山普觉禅寺举办佛教文物展，而当时邀请总统蒂凡那与夫人出席开幕典礼。三步一拜在1984年首次在光明山普觉禅寺举办。泰国公主诗琳通在1985来访光明山普觉禅寺，并亲持泰僧王之袈裟赠送宏船长老。与此同时，他也邀请了泰国副僧王率团亲临光明山普觉禅寺万佛塔之奠基典礼。同年，宏船长老在光明山举办了首届上座部短期出家，而在隔年为新世界酒店坍塌办大型的超度法会。
宏船长老在1982年至1990年之前，回返中国八次。他会见了一些重要人物如中国国家副主席乌兰夫、中国佛教协会赵朴初会长、中国佛协副会长正果法师、国务院宗教事务局乔连升局长、全国人大副委员长班禅大师等。他的中国之旅参访了许多佛寺和著名胜地，还不忘返乡礼祖，促进中新佛教友好关系， 同时也出资帮助中国寺院修复寺院如万石莲寺、承天寺等。宏船长老在1985年带领了25名宗教联谊会各大宗教领袖一同前往中国交流访问。
宏船长老在1990年12月25日于光明山普觉禅寺圆寂。
Venerable Seck Hong Choon initiated the Grand Diamond Gem Repentance Puja in 1981 to attract residents from Ang Mo Kio New Town to practice Buddhism. In 1983, he led the Singapore Buddhist Federation (SBF) in organising a Buddhist Artefacts Exhibition at KMSPKS and invited the then President and Mrs. C V Devan Nair to the Opening Ceremony. The symbolic “Three Steps, 1 Bow” (三步一拜) ceremony was held for the first time at KMSPKS in 1984. In 1985, Venerable Seck Hong Choon received a visit from Her Royal Highness, Princess Sirindhorn of Thailand, where she offered robes presented by His Eminence the Supreme Patriarch of Thailand. Venerable Seck Hong Choon later invited the Deputy Supreme Patriarch of Thailand to visit and officiate the foundation-laying ceremony for the Pagoda of 10,000 Buddhas at KMSPKS. Venerable Seck Hong Choon also organised the first short-term novitiate programme at KMSPKS in the same year. In 1986, he organised a mass puja for the deliverance of victims who lost their lives in the New World Hotel disaster.
Between 1982 and 1990, Venerable Hong Choon made eight visits to China, during which he met with important figures such as Ulanhu (Vice-President of the Republic of China), Zhao Puchu (Chairman of the Buddhist Association of China), Venerable Shi Zheng Guo (Vice-Chairman of the Buddhist Association of China), Qiao Liansheng (Director of National Religious Affairs Administration), His Holiness, Panchen Lama (Vice-Chairman of the National People’s Congress), and others. During his visits to China, he made trips to several Buddhist temples and famous landmarks, funded restoration works at temples such as Wan Shi Lian Temple and Cheng Tian Temple, and even returned to his hometown to pay respects to his ancestors. Venerable Seck Hong Choon’s visits played an important role in promoting deep ties and friendship between the Buddhist communities of both countries. In 1985, Venerable Seck Hong Choon led a delegation of 25 representatives from Singapore’s Inter-Religious Organisation (IRO) on its first multi-religious exchange programme to China.
Venerable Seck Hong Choon passed away at KMSPKS on 25 December 1990.