Chinese website M1905 has posted a bunch of video from the various Hong Kong sets of Transformers: Age of Extinction. Sprinkled in the set are interviews with some of the cast. Most of the videos are in Mandarin but you can catch a lot of behind the scenes stuff as Michael Bay, Jack Reynor (Shane Dyson), Mark Wahlberg (Cade Yeager), Nicola Peltz (Tessa Yeager), Stanley Tucci and the crew work. TFW2005 was able to gleam a few story tidbits (below). The full set of videos is here. As for the sword image to the left, that was found by GabrielPrime and seems to an image of the Cybertronian sword that Mark Wahlberg's been carting around on many of the film's sets.

- Reynor: Shane is secret Irish race car driving boyfriend of Tessa's due to dad's no dating rule. Gains trust of Cade by saving Tess and Cade's life early in the movie.
- Tessa's mother is dead, result is Cade being over protective of her.
- Cade and Optimus become friends due to their (similar) code of ethics.
- Prime forced into situation of choose doing the right thing over his own life while Cade must choose between himself or his daughter (guessing translation problem because choice is always obvious for hero characters, Prime especially)
- Li Bingbing's character is owner of a factory in China (guessing something to do with the rumored Chinese Transformers)
- One Cybertronian speaks Mandarin only.
- The movie's third act takes place entirely in Hong Kong.