8 As We have already written to you in the previous Letter, this Apostolic See, especially in these recent times, has exercised the greatest solicitude that as many priests and Bishops of your own noble race as possible be correctly instructed and trained. And so Our immediate predecessor of happy memory, Pius XI, personally consecrated in the majestic Basilica of St. Peter the first six Bishops chosen from among your people. We ourselves, having nothing dearer to Our heart than the daily advancement of your Church, have been happy to establish the Sacred Hierarchy in China and for the first time in history have conferred the dignity of the Roman Purple on one of your citizens ( Ibid ., p. 155).
Source: Ad Sinarum Gentem (Vatican.va)