Happy Summorum Pontificum Day!

Yes, in case you'd forgotten, it's two years since the Holy Father issued the motu proprio Summorum Pontificum liberating the Extraordinary Form/Tridentine Mass/Old Rite/Traditional Latin Mass/Gregorian Rite of Mass (how have we come up with so many titles for it over 40 years?), and the same Pope has decided to release his third encyclical letter on the same day. On another note, you may have found a rather interesting article about the arrival of Mass in Chinese, which whatever one's views on is still fascinating.