This week is a school holiday in China, but the children were called in to make up for time lost as a result of earthquakes last month.

BBC: China landslide: All 18 children killed

The Foreign Ministry did not immediately respond to faxed requests for comment on Tuesday, a public holiday in China marking the Lunar New Year.

NPR: North Korea Nuke Test Could Test China's Patience

However, some observers also caution that a three-day holiday in China next week could at least temporarily curb some of the global buying.

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Capital markets in China were closed for a national holiday and will reopen on Monday.

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Capital markets in China were closed for a national holiday and will reopen today.

FORBES: H7N9 Bird Flu Cases Reach 21 In China; Death Total Unchanged At Six

Capital markets in China were closed for a national holiday on Thursday and Friday, and will reopen on Monday.

FORBES: Shanghai Shuts Poultry Markets As H7N9 Flu Deaths Increase To Six

Most analysts blamed the timing of the Chinese New Year holiday for the surprising figures, which looked a lot better in January for China investors.

FORBES: Barclays: China Source Of High Inflation For "Next Decade"

Share-trading systems were also clogged up as investors piled in after a holiday to mark the founding of the People's Republic of China.

ECONOMIST: Share prices in China have taken on a life of their own

With the holiday quarter nearing its end, Apple looks set to receive a big push in iPhone sales from China.

FORBES: Apple Gains Momentum In China As iPhone 5 Launch Nears