TVXQ's Yunho (U-KNOW) practices for Japan tour today... ”I need to build up my strength”

Yunho (U-KNOW) of TVXQ shared his daily practice for the Japan tour. On the 9th, Yunho (U-KNOW) posted on his Instagram Stories, "Tour practice
Day 8 ZONE I was focused today. I sweated a lot. My strength is declining. I need to build up my strength," he wrote in his post.
The released photo shows Yunho (U-KNOW) making a peace sign in front of the mirror in the practice room. Meanwhile, TVXQ, the group Yunho (U-KNOW) belongs to, is releasing their 20th anniversary Japanese debut full album "ZO
NE" on November 6th, and will be held in eight cities in Japan, including Aichi, Hiroshima, Osaka, Fukui, Miyagi, Fukuoka, and Yokohama, starting with Saitama Super Arena on November 29th and 30th.
They will be holding a commemorative tour "TOHOSHINKI 20th Anniversary LIVE TOUR ~ZONE~".