A postal card comes with entry ticket that shows Shangsi Shiwan Dashan Mountain (上思十万大山) in Guangxi (广西). The ID no. is 13-450000-11-0006-019. Thanks Lingxiao.
A 540 Yuan scenery stamp (98-26, 2-2) was used to up-rate this card that comes with a 80 Fen imprint Year of the Horse stamp. It was cancelled with postmark of Nanning Pingxin (Tongqu) 2 or "那宁 平信（筒取）2" but the date is not clear.