A Malaysian grandpa who is a millionaire would typically pass on his wealth to the second generation in the form of cash. 

He worked hard for all his life, saved all his wealth in the form of hard cash and he did not enjoy his life. Each of his two sons only inherited half of his wealth. Similarly, his second generation would pass on the cash to the third generation. 

The drawback of this wealth inheritance method is he can only be one-generation millionaire and his wealth is not preserved over the next generations.

An American grandpa who is a millionaire would split it into 70:30. 

He took out 70% of his wealth in the form of cash and used it to enjoy his life with his spouse. The other 30% would be used as the premium to purchase an assured life insurance with 1 Million value each for his two sons. 

Upon his decease, each of his sons would inherit a paypack worth 1 Million from the insurance company. Similarly, the second generation would do the same method to pass on the wealth to the third generation. In this case, each of the beneficiaries of this grandpa would still remain as a millionaire upon his decease!