I'm a little cautious as London prices at $5,000 mark is a very important price level. I think at this price volatility will emerge.

Given such high copper prices, no traders dare to put on short positions, and that's why volume reduced. Some traders pulled investments from copper into aluminum, betting gains in aluminum might be bigger.

High cash prices have led futures prices to rise, but the gains are overdone. Those who want to import may draw metal from warehouses in South Korea, which would only take a week to reach China.

Funds are giving a strong boost to metal prices.

I saw fireworks only on TV before, but tonight I set off them myself. They are as beautiful as shining stars! This is the most unforgettable Spring Festival in my life.

A lot of young people who begin taking the language say they are doing it for work. They hope that in the future, if they can speak Chinese, they have better luck finding work.

Overall, the push from speculators is the main driver for higher copper prices.

Global supply of copper is tight. Nobody dares to build fresh short positions in this situation.