The mini-game involves raiding a Spanish Lords warehouse to steal a drug van. When the drug van is stolen, bring it to a secluded safe-house to search it. It is very similar to the mission Kenny Strikes Back, considering the mini-game is based on the mission.
Go to the warehouse in South Bohan. The front gate can be spotted easily by the arrows pointing towards the lock. Walk into the arrows to begin the lock smashing mini-game (instructions are show in-game). Once the gate is open enter the compound. Try to avoid being spotted by the guards as they will all open fire. Reach the van parked at the other end of the compound, steal it and drive out. Head towards the closest secluded safe-house while avoiding the enemies chasing in their vehicles. After arriving at a secluded safehouse, Huang will get out of the car and the player needs to search the van for drugs (instruction are show in-game).
Upon completion of the mini-game any drugs obtained from the van will be stored in the drug bag or stash box. The mini-game never ends so it is a great way to obtain drugs to sell for profit.