Gentle Son-in-law

For three years, Zhang Luo lived as an outcast, disowned by the prestigious Zhang family after his father's untimely death.  
Now, he endures life as the ridiculed son-in-law of the Yang family.  But at a scornful family gathering, Zhang Luo’s wit sparks conflict with his arrogant in-laws.  
Just when his modest existence seems secure, a mysterious package and a phone call from his late father’s butler upend his life. Within the package lie relics of his father’s legacy: a battered smartphone, a bottle of murky water, and an unassuming bank card.   
 Are these items the key to his redemption?