Word of Sung's successes in the orchards soon spread beyond Taiwan. In 1970 Sung was sent by the government to assist a horticulture project in the hill country of northern Thailand.
民國五十九年八月起，宋慶雲的果樹生涯又步入另一個里程碑﹘﹘奉派至泰北，負責協助泰國的「泰王山地開發計畫」。