idiom > Son born of a concubine Solitary Chen
Outsiders solitary Robinson

  Explanation: Alienated, isolated and out of favor Bastard courtiers.
  Source: Qing Cao Xueqin's "Dream of Red Mansions," the first two ○ back: "Although things are fixed before, do nothing, but the Outsiders solitary Chen, Yoshio virtuous women, which forced the words is not Yigai committee obtained."