"Nobody can put Numbers on the flows of Chinese into Russia because just about all of it is undocumented," though much of it is probably temporary, or "circular," migration, says Quillin.

“没有人能够了解流入俄罗斯的中国人人数，因为几乎所有中国人均未经正式登记，”虽然大部分中国人均为临时入境或“循环”流动，Quillin表示。

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This kind of migration is unsteady and the reflux is stronger. Therefore, Chinese rural labor forces are in a floating condition instead of transferring stably toward the city.

这种转移是不稳定的，回流性较强，因此，中国农村劳动力大多处于流动状态，而不是向城市较稳定的转移。

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About 230m Chinese are expected to take part in the world's biggest annual human migration.

预计约有2.3亿人将参加世界上规模最大的年度迁移。

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He sees a continuing vast migration of Chinese farmers to coastal cities, doubling the size of Beijing and Shanghai.

WSJ: Outspoken Real-Estate Executive Makes Few Friends Among Public

Second, Fogel is right to note that migration of labor to cities has been the engine of Chinese growth, but that process has stalled in the global economic downturn.

FORBES: New Asia