Ad Apostolorum Principis §56

⁵⁶ He sees clearly your anguish and your torments. He particularly finds acceptable the grief of soul and the tears which many of you, bishops and priests, religious and laymen, pour forth in secret when they behold the efforts of those who are striving to subvert the Christians among you. These tears, these bodily pains and tortures, the blood of the martyrs of past and present - all will bring it about that, through the powerful intervention of Mary, the Virgin Mother of God, Queen of China, the Church in your native land will at long last regain its strength and in a calmer age, happier days will shine upon it.