China has actively internationalized its doctoral education by funding students to study abroad via the China Scholarship Council. Nevertheless, little is known about the scholarship recipients' perceptions of their study sojourn, especially those on short-term exchange programs. Based on 100 visiting doctoral students' study reports, the study employed a sentiment analysis and was guided by the ecological system theory to untangle how this cohort affectively evaluated academic and non-academic dimensions of the study sojourn as a multi-layered ecological system. Via a computer-based SKEP analysis, the study contributes new objective insights regarding the perceived nature of an overseas sojourn, which is predominantly positive. In particular, it reveals positive perceptions regarding the funder and institutional prestige, indicating that the recipients' increasing national pride may be harnessed as a soft pulling force for nation-building. This paper ends by offering implications that may potentially benefit doctoral education in China and other countries.