1. Donnie Yen is today's standard bearer of Hong Kong kung fu flicks.
First off, Donnie Yen is considered a Hong Kong star, not a mainland Chinese one. In recent years, Yen has become one of the biggest box office draws in mainland China, thanks to his leading role in Ip Man, along with starring parts in major Chinese fantasy hits such as The Monkey King.
2. Yen's presence probably means Wushu meets Stars Wars.
Although the hints in the teaser trailer are thin, it looks like Yen will be putting his many martial arts skills to good use in Rogue One. Rumors suggest Yen's character is an update on the kung fu archetype of the "blind swordsman."
Yen's moves in Ip Man have also won him the admiration of avid Wing Chun practitioner Robert Downey Jr., aka Iron Man.
4. Actor-director Jiang Wen is a pillar of the Chinese film industry.
Jiang Wen has a few seconds in the trailer, too. Jiang became well known to international film lovers for his leading performance in Zhang Yimou's classic Red Sorghum, which won the Golden Bear at the Berlin Film Festival in 1987. In recent years he's achieved much larger exposure by directing and starring in the hit period action-comedy pictures Let the Bullets Fly (2010) and Gone with the Bullets (2014).
5. Disney's China play has had a mixed reception in the Middle Kingdom.
Around the same time that it was trending everywhere else in the world via YouTube, the Rogue One teaser trailer hit the internet in China on local online video services like Youku Tudou and Tencent's QQ Video (YouTube is blocked in China). On Tencent, the video has received just shy of 1 million views.
The comments section beneath the video is a mixture of enthusiasm and cynicism. A user appeared more sensitive about being pandered to: "This is the typical approach, adding Chinese elements to make money in China."