The reason behind Brad Pitt's mysterious tweet in China may finally have a tangible explanation.

According to E! News, the 49-year-old actor reportedly signed on the newest spokesman for Cadillac and the deal will include various print and TV ads, which will air in the PRC.

News broke just a few days after the “Fight Club” actor join Sina Weibo, a social network site for citizens of China.

His first post read, “It is the truth. Yup, I'm coming . . ."

Neither Pitt’s camp nor Cadillac’s reps have commented on the speculated partnership.