The plan is heard designed so well that we don't hane to make any changes.heard designed

The plan is heard designed so well that we don't hane to make any changes.heard designed
The plan is heard designed so well that we don't hane to make any changes.
heard designed

The plan is heard designed so well that we don't hane to make any changes.heard designed
听说这个计划设计的很好,我们不用作任何修改.
heard是plan的谓语（被动）
designed so well是省略过的从句原句是The plan is heard that it's designed so well.