Indeed, at the rituals of the installation, the chief is invested with the 'rule' or 'authority' (lewaa) over the land, but the land itself is not conveyed to him. The soil (qele) is specifically identified with the indigenous 'owners' (i taukei), a bond that cannot be abrogated. Hence the widespread assertion that traditionally (or before the Lands Commission) the chiefly clan was landless, except for what it had received in provisional title from the native owners, i.e., as marriage portion from the original people or by bequest as their sister's son ... The ruling chief has no corner on the means of production. Accordingly, he cannot compel his native subjects to servile tasks, such as providing or cooking his daily food, which are obligations rather of his own household, his own line, or of conquered people (nona tamata ga, qali kaisi sara). 

Yet even more dramatic conditions are imposed on the sovereignity at the time of the ruler's accession. Hocart observes that the Fijian chief is ritually reborn on this occasion; that is, as a domestic god. If so, someone must have killed him as a dangerous outsider. He is indeed killed by the indigenous people at the very moment of his consecration, by the offering of kava that conveys the land to his authority (lewaa). Grown from the leprous body of a sacrificed child of the native people, the kava the chief drinks poisons him ...

Sacred product of the people's agriculture, the installation kava is brought forth in Lau by a representative of the native owners (mataqali Taqalevu), who proceeds to separate the main root in no ordinary way but by the violent thrusts of a sharp implement (probably, in the old time, a spear). Thus killed, the root (child of the land) is then passed to young men (warriors) of royal descent who, under the direction of a priest of the land, prepare and serve the ruler's cup ... the tuu yaqona or cupbearer on this occasion should be a vasu i taukei e loma ni koro, 'sister´s son of the native owners in the center of the village'... Traditionally, remark, the kava root was chewed to make the infusion: The sacrificed child of the people is cannibalized by the young chiefs. 

The water of the kava, however, has a different symbolic provenance. The classic Cakaudrove kava chant, performed at the Lau installation rites, refers to it as sacred rain water from the heavens ... This male and chiefly water (semen) in the womb of a kava bowl whose feet are called 'breasts' (sucu), and from the front of which, tied to the upper part of an inverted triangle, a sacred cord stretches out toward the chief ... 

(pictures from Cecilia Lindqvist's Tecknens Rike showing very old Chinese cooking vessels)

The cord is decorated with small white cowries, not only a sign of chieftainship but by name, buli leka, a continuation of the metaphor of birth - buli, 'to form', refers in Fijian procreation theory to the conceptual acception of the male in the body of the woman. The sacrificed child of the people will thus give birth to the chief.

But only after the chief, ferocious outside cannibal who consumes the cannibalized victim, has himself been sacrificed by it. For when the ruler drinks the sacred offering, he is in the state of intoxication Fijians call 'dead from' (mateni) or 'dead from kava' (mate ni yaqona), to recover from which is explicitly 'to live' (bula). This accounts for the second cup the chief is alone accorded, the cup of fresh water. The god is immediately revived, brought again to life - in a transformed state ...

The spear mentioned is in rongorongo probably depicted as the glyph type ragi (sky) minus the light sign (the Moon crescent) and then it becomes vero (spear):

ragi	vero	Aa8-27

Counting 82 * 7 it becomes 574 which number presumably should be read as 14 * 41 in order to represent the mirror image like change of state which the spear indicates.

Vero was the name of a month. On Marquesas it was the 10th month (veo) which suits the kava ceremony - it is time for a new ruler to ascend:

Vero To throw, to hurl (a lance, a spear). This word was also used with the particle kua preposed: koía kua vero i te matá, he is the one who threw the obsidian [weapon]. Verovero, to throw, to hurl repeatedly, quickly (iterative of vero). 1. Arrow, dart, harpoon, lance, spear, nail, to lacerate, to transpierce (veo). P Mgv.: vero, to dart, to throw a lance, the tail; verovero, ray, beam, tentacle. Mq.: veó, dart, lance, harpoon, tail, horn. Ta.: vero, dart, lance. 2. To turn over face down. 3. Ta.: verovero, to twinkle like the stars. Ha.: welowelo, the light of a firebrand thrown into the air. 4. Mq.: veo, tenth month of the lunar year. Ha.: welo, a month (about April). Sa.: velo, to cast a spear or dart, to spear. To.: velo, to dart. Fu.: velo, velosi, to lance. Uvea: velo, to cast; impulse, incitement. Niuē: velo, to throw a spear or dart. Ma.: wero, to stab, to pierce, to spear. Ta.: vero, to dart or throw a spear. Mg.: vero, to pierce, to lance. Mgv.: vero, to lance, to throw a spear. Mq.: veo, to lance, to throw a spear.