Collins Chinese Dictionary Plus (3rd edition), 2011:
按图(圖)索骥(驥) àn tú suǒ jì be rigid in one's approach
- 他做什么(麼)事情都是按图(圖)索骥(驥)，效率太低。 Tā zuò shénme shìqing dōushì àn tú suǒ jì，xiàolǜ tài dī. He's ineffective because his approach is too rigid.