"Kai-tang are surprisingly smart for a species with such ridiculous amount of hair."
Both races tend to live in small communities and isolated groups, minimizing chance for organized conflict. When azan and kai-tang come into blows, it is limited struggle, almost universally caused by dispute over a noteworthy resource, and often takes form of one of more ruthless azani corporations harassing kai-tang settlement through intermediaries, "rogue" monsters, arranged accidents, and an occasional catastrophe until they leave or agree to sell the resource.
Occasionally an azani cabal or even a corporation hires a kai-tang or an association of them as skilled labor force or even as low-tier assistants and overseers for less intellectually-capable laborers. From time to time, more academically minded azan or even whole colleges recognize intellectual achievements of kai-tang scholars and sages, entering into scholarly correspondence to exchange ideas. Larger kai-tang communities might commission azani engineer when they decide that technological solution to an existing problem is the most appropriate.
The Pattern-makers and the Pattern-seekers
"I looked and I saw. The movement. The dozens teethed wheels interlocking with smaller and bigger teethed wheels. Things with shapes that have no names revolving around each other. Lights circling lights like if they were stars. Metal, stone, crystal, and smoke. It was enthralling, it was terrible."
Azan and oc'cli are in many ways oppositions. Azan have an intense sense of intellectual superiority that makes them seek mastery over the world, bending their environment to their needs, and believing themselves to be the source of order. For them "natural" is a derogatory term, synonym of inefficient, base, chaotic, product of random processes, and in dire need of being improvement or discarded to make place for deliberate creation. Oc'cli are seeking harmony and intuitive enlightenment, trying to discover and understand the ultimate pattern of things, which they believe is inherent in all things, but especially in the nature.
When azan care to pay attention to oc'cli at all, they disdain their focus on intuition and mock their intellectual slowness—and more than one azan hypothesized that oc'cli might be result of someone's failed experiment to create dedicated savant-minions. Oc'cli on the other hand have troubles with incorporating azan advanced technology into their interpretations of the ultimate pattern. Some of them are easily fascinated and confounded by complexity of azan creations. A few creeds declared azan creations to be disruptions to the pattern itself, especially in regions where azan were particularly rapacious at exploiting local resources, creating a number of oc'cli guerrilla groups targeting azan installations wherever they can find them.