[tialaramex]

> cow tail to his pressure and demands.

The idea you wanted is "kowtow" not "cow tail". The "kowtow" is a Chinese gesture of submission to power, in practice it might be a large formal gesture like European bowing, but it can be something much more subtle, like the knuckle tap in the tea ceremony, the observer knows what is signified. The submission to power rather than a particular gesture is what's retained in English.

"Cow tail" does exist as an actual idea in baseball, as a particular type of long swing which is said to resemble how cows twitch their tails but here that doesn't make sense.