Acts 16:9-10
9And a vision appeared to Paul in the night: There was a man of Macedonia standing, beseeching him, and saying, Come over into Macedonia, and help us. 10And when he had seen the vision, straightway we sought to go forth into Macedonia, concluding that God had called us to preach the gospel to them.
Scripture Testimony Index stories for this passage
Some Chinese in the underground church, desiring to be missionaries, are having visions of specific people in specific countries speaking specific languages.