1, the construction progress did not meet the pre-sale requirements, and the pre-sale certificate was not completed, so it was impossible to open for sale.

2. There are not enough customers who meet the opening expectations and will not open for the time being, so they will choose to continue to store customers.

3. When the market falls, the opening profit may be damaged. At this time, developers will postpone the opening or even not open. Maybe a new round of costing will be adjusted and re-priced.