In the 1:40 hr mark, Fr. Chisholm approaches the sentries who command him to follow them in Tagalog, a Philippine language.
In the scene where Father Francis Chisholm (Gregory Peck) is leaving his mission in China after being ordered into retirement, the children are heard singing his favorite hymn as he steps from the car, but when the camera shows the children singing, it is obvious that they are mouthing something entirely different from what is being heard.