"長江七號" (CJ7) is a heartwarming 2008 film directed by Stephen Chow, blending elements of comedy and science fiction. The story revolves around a poor construction worker named Ti (played by Chow himself) who struggles to provide a better life for his young son, Dicky. Living in a rundown apartment, Ti works tirelessly to make ends meet, often sacrificing his own needs for the sake of his son.

One day, while scavenging for items to sell, Ti discovers a mysterious alien toy that he brings home, believing it to be a simple plaything. To their surprise, the toy comes to life, transforming into a quirky and lovable creature that Dicky names CJ7. As the bond between Dicky and CJ7 grows, the film explores themes of friendship, imagination, and the importance of family.

However, the arrival of CJ7 also brings unexpected challenges, as Ti must navigate the complexities of parenting and the pressures of societal expectations. The film balances humor with poignant moments, ultimately delivering a touching message about love, sacrifice, and the magic of childhood. With its unique blend of fantasy and heartfelt storytelling, "CJ7" captivates audiences of all ages, making it a memorable addition to Stephen Chow's filmography.