see 緒論|绪论[xu4 lun4]

introduction; introductory chapter

mood; state of mind; moodiness; CL:種|种[zhong3]

outline; main threads

to be ready; to be in order

train of thought; emotional state; mood; feeling

reign name of penultimate Qing emperor Guangxu or Guang-hsu (1875-1908)