![A soldier on a military vehicle in smoke is seen during the Tank Day 2018 in Lesany, Czech Republic, Sept. 1, 2018. (Photo/Agencies)](http://www.ecns.cn/hd/2018/09/04/e6f7a415d1b14e8c9a2ba3ff4d1f2466.jpg)
A soldier on a military vehicle in smoke is seen during the Tank Day 2018 in Lesany, Czech Republic, Sept. 1, 2018. (Photo/Agencies)
![A Renault FT-17 historical light tank is seen during the Tank Day 2018 in Lesany, Czech Republic, on Sept. 1, 2018. (Photo/Agencies)](http://www.ecns.cn/hd/2018/09/04/f44895fb38d5426eb5a401ed79abd6a9.jpg)
A Renault FT-17 historical light tank is seen during the Tank Day 2018 in Lesany, Czech Republic, on Sept. 1, 2018. (Photo/Agencies)
![A tank is seen during the Tank Day 2018 in Lesany, Czech Republic, on Sept. 1, 2018. (Photo/Agencies)](http://www.ecns.cn/hd/2018/09/04/bb7064df8fbc47a5820780d3b694ea00.jpg)
A tank is seen during the Tank Day 2018 in Lesany, Czech Republic, on Sept. 1, 2018. (Photo/Agencies)