Remember the clue Sea Mother gave you? It says: "Where the turtle looks, walk three steps." So here is what you do, leave the restaurant, and you will see a sign in red Chinese letters. When I translated it from Chinese to English, it said "Turtle". This is what the clue meant by where the turtle looks. Now that you know that, walk three steps to the left, then press the X button and Yuri's icon will come up stating that he found something. Yuri believes it is the treasure Sea Mother inherited from the dead man. The Judgement Ring will then show up, and you will have to do a normal ring. If you successfully hit the area's three times around you will be awarded with 3,000 cash. It's not a whole lot, but it's a nice bonus early in the game.
Go talk to the man blocking the small fenced in area north of the restaurant in Dalian. He will say that he has a game you may play for 300 cash, so agree to play and he will let you know the rules. You get a hoe and have to find three things that you want in the small area of land. When the question mark comes up, press the X button and a normal ring will show. If you do it once around the areas successfully then you get the item that was in the grass. It's fairly simple, and well you get three tries. I would suggest saving before doing it so you can reload if you don't get anything worthwhile and try again. Try and get some Third Key's and keep doing it again and gain if you want to. The Third Key allows you to do the Judgement Ring three times around during battle, which equals nine attacks in one turn. However you can sell the Third Key's for 15,000 cash each, therefore having no issues with money.