Not merely analogies and resemblances, but what are called actual identities, are pointed out between the two cultures, and even between the two languages, sufficient to establish a common origin of both, Mesopotamia being the fountain-head, whence the stream flowed by channels not clearly defined to the Hoang-ho valley. Thus the Chin. _yu_, originally _go_, is equated with Akkad _gu_, to speak; _ye_ with _ge_, night, and so on. Then the astronomic and chronologic systems are compared, Berossus and the cuneiform tablets dividing the prehistoric Akkad epoch into 10 periods of 10 kings, lasting 120 Sari, or 432,000 years, while the corresponding Chinese astronomic myth also comprises 10 kings (or dynasties) covering the same period of 432,000 years. The astronomic system credited to the emperor Yao (2000 B.C.) similarly corresponds with the Akkadian, both having the same five planets with names of like meaning, and a year of 12 months and 30 days, with the same cycle of intercalated days, while several of the now obsolete names of the Chinese months answer to those of the Babylonians. Even the name of the first Chinese emperor who built an observatory, Nai-Kwang-ti, somewhat resembles that of the Elamite king, Kuder-na-hangti, who conquered Chaldaea about 2280 B.C. All this can hardly be explained away as a mere series of coincidences; nevertheless neither Sinologues nor Akkadists are quite convinced, and it is obvious that many of the resemblances may be due to trade or intercourse both by the old overland caravan routes, and by the seaborne traffic from Eridu at the head of the Persian Gulf, which was a flourishing emporium 4000 or 5000 years ago. But, despite some verbal analogies, an almost insurmountable difficulty is presented by the Akkadian and Chinese languages, which no philological ingenuity can bring into such relation as is required by the hypothesis. T. G. Pinches has shown that at a very early period, say some 5000 years ago, Akkadian already consisted, "for the greater part, of words of one syllable," and was "greatly affected by phonetic decay, the result being that an enormous number of homophones were developed out of roots originally quite distinct[473]." This Akkadian scholar sends me a number of instances, such as _tu_ for _tura_, to enter; _ti_ for _tila_, to live; _du_ for _dumu_, son; _du_ for _dugu_, good, as in _Eridu_, for _Gurudugu_, "the good city," adding that "the list could be extended indefinitely[474]." But de Lacouperie's Bak tribes, that is, the first immigrants from south-west Asia, are not supposed to have reached North China till about 2500 or 3000 B.C., at which time the Chinese language was still in the untoned agglutinating state, with but few monosyllabic homophones, and consequently quite distinct from the Akkadian, as known to us from the Assyrian syllabaries, bilingual lists, and earlier tablets from Nippur or Lagash.