shī​yí​cháng​jì​yǐ​zhì​yí

learn from foreigners to control them

Senses

师夷长技以制夷/ 師夷長技以制夷 shī​yí​cháng​jì​yǐ​zhì​yí learn from foreigners to control them

Learn the superior technology of foreigners in order to gain control over them; a policy of modernizing China's defenses advocated by the scholar 魏源 wèi​yuán during the Qing Dynasty.

References

see 师夷长技以制夷/師夷長技以制夷 魏源/魏源