螳螂捕蝉，黄雀在后

táng láng bǔ chán , huáng què zài hòutanglangbuchan,huangquezaihou

1. (lit.) the mantis stalks the cicada, unaware of the siskin behind (idiom, from Daoist classic Zhuangzi 莊子|庄子[Zhuang1 zi3])
2. (fig.) to pursue a narrow gain while neglecting a greater danger

Study it in Yanamino