DestinyHelix

Okay "The Empty Hearse" just aired on "Masterpiece" in the US last night. Despite seeing people point out multiple possible "Doctor Who" references, I haven't seen anyone mention the end credits. If it's been pointed out and I missed it or if it's only in the American version (which seems unlikely), I apologize. There are a bunch of seemingly random red letters in the otherwise white credit text. If you write them down in the order they appear, it spells out... WENGCHIANG So it's an obvious reference to the Tom Baker story "The Talons of Weng-Chiang", but what does it mean? Is it a hint as to what's going on on Sherlock and/or the identity of the mystery villain? Is it a hint that we'll see Peter Capaldi go up against classic villains Magnus Greel and Mr. Sin in the upcoming series of "Doctor Who"? Or is it just an Easter Egg included by the production team as a shout-out and a tease to fans of both shows?