No, this is not a belated April Fool's joke. The government has resorted to using China's own crowdfunding site 'Gongyi.qq.com" to raise funds to repair the Great Wall.
According to Dong Yaohui, Executive Vice President of the Great Wall Society of China, "only 8% of the 6,259 kilometer Ming Great Wall is well preserved with 31% having already disappeared." He added that the donations will help fund repairs for the Jiankou and Xifengkou sections of the wall.
It's not as ludicrous as it sounds; just this year, Italy adopted crowdfunding to preserve a multitude of its endangered UNESCO world heritage sites. And China is currently on pace to meet the 11 million RMB needed for the initial repairs. However, another 23 million yuan will be necessary for the second round of renovations.
Donating is super simple. Just go to the crowdfunding page here, and hit "微信捐款" ("donate through WeChat"). Scan the QR code that appears on your phone, press the green "pay now" button and enter your password when prompted.