รถไฟ, ทางรถไฟ, ทะเลสาป, จักกะ, แทร็ค, การท่องเที่ยว, ทะเลสาบเกลือ, ภูเขา, ธรรมชาติ, ที่สวยงาม, มณฑลชิงไห่
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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