Ever wondered what Block B was doing in Vietnam of all places?  Come check it out; I’ve got the answer right here. I’ve also got the answer as to why they are never going back again.   Turns out it was all a dare.  Zico, leader of the notorious gang Block B, accepted the challenge to return to Vietnam for a job.  The goal: a pair of large diamonds recently obtained by the biggest crime lord of Southeast Asia: P. D. Tran.  The goal itself offered no cha