PetroChina's stunning debut on the Shanghai stock Exchange again demonstrated the force of China's bull market, which has more than doubled its benchmark stock index so far this year.

For those of you accustomed to bull markets, who think we're sure to come out of this quickly, remember this: Japan's main stock index is still less than one-third of its level of 19 years ago.

While in the other side of this planet, unlucky Chinese investor who survived long 5 years bear market now are experiencing a bull market whose index increased by more than 100% in the last two years.