在地势起伏的川西,在风景如画的318国道巴塘路段上的姊妹湖后面,矗立着两座巍峨的雪山——夏塞峰和5640峰。尽管两峰的攀登难度属于中等,适合具有一定经验的攀登者,但名声却并不响亮,攀登者极少。初夏5月,一支3人登山队经过充分准备,一路青春作伴,克服重重困难,在3天之内连续成功登顶两峰…… Behind the sister lake on the picturesque Batang section of National Road 318 stands two towering snow-capped mountains - Xia Sifeng and 5640 in the rugged western Sichuan Province. Although the difficulty of climbing two peaks is moderate, suitable for climbers with some experience, but the reputation is not loud, very few climbers. In the early summer of May, a 3-man mountaineering team was well-prepared, all the way to youthful companionship, to overcome numerous difficulties and successfully climbed two peaks consecutively within 3 days.