铁板一块

Explanation: Combination of close analogy can not be split. The same metaphor is also strong. 　　Usage: Partial official; as object, attribute; metaphor firmly unchanged 　　Source: Wu Han, "Emperor of" Chapter VII: "the emperor and the head of the group, although in the past with the life and death, through thick and thin, but it is not monolithic." Thesaurus:  lofty fixedly, granite, Deep roots give rise to flourshing leaves, when the wood is firm,the branches flourish, Jiugong not less than Antonym Group:  wrong decision made in a moment of weakness with serious consequences, A study of errors, A long 2 short, unforeseen disasters or accidents, something unfortunate, Difference of iota, immediately respond to a call, Caught on follow