I constructed this Guide from This one
This Guide will also help. Since the quest requires travel between both points referenced.
Getting to Chang'an from Fishing Village
Start in Chang'an at this house.
Click Villager to start quest.
Help him find his brother.
Go to Fishing Village to talk to his Brother.
He needs these items.
Get them and return or have them.
Talk to him again.
Go back to Chang'an and talk to first brother you talked to again.
As you do Wino Cai returns.
did you get your Daily Credit http://wl.igg.com/main.php