I told y'all before and I'll tell you again.
Ri Boku is setting a trap for Kan Ki's trap
Mark my words.
Hara will reveal it in a flashback at Gian. The corpse tree tipped Kan Ki's hand. He was counting on the fear of the threat to throw the Zhao into panic and disarray, leaving Ri Boku vulnerable in their rush to relieve Hika.
Look at those panels. Where are Ba Nan Ji, Fu Tei, Kaine, SSJ and the Seika generals? Ri Boku has had them deployed in armies before him or at his side the entire arc. Now he's vulnerable? I don't buy it.
Ri Boku likely knows Kan Ki would only reveal himself to kill Ri Boku, so Ri Boku is using himself as bait, while Ba Nan Ji brings up an army to smash the Qin when they reveal themselves.
Ba Nan Ji vs Zenou
Fu Tei vs Kan Ki
Kaine vs Rin Gyoku
Count on it.