byzantine       
adjective  formal disapproving (also Byzantine) uk/bɪˈzæn.taɪn/ /ˈbɪz.ən.tiːn/ us/ˈbɪz.ən.tiːn/ /bɪˈzæn.taɪn/
 错综复杂的
complicated and difficult to understand
  rules of byzantine complexity 复杂难懂的规则 
 He called for an overhaul of the byzantine tax system.
 The calculations become positively Byzantine in their complexity.
 - More examples
- The byzantine legal manoeuvring went on for years.
- They are seeking alternatives to the current Byzantine process for channelling money into education schemes.
- Anyone who has managed the complex challenges of a large household can survive the most byzantine office intrigues.