Yao Chang, during his fight with Former…

Murong Chui personally attacks Zhai Zhao in 392, heading for his capital Huatai.

Zhai Zhao seeks aid from Western Yan's emperor Murong Yong, but Murong Yong, believing that Zhai Zhao could wear Later Yan out without his aid, refuses.

Murong Chui now pretends to build rafts to ready to cross the Yellow River, and Zhai Zhao tries to attack his flotilla; however, Murong Chui's general Murong Zhen crosses the river at a different spot and encamps.

Zhai Zhao tries to attack both places, but his army is worn out and collapses completely.

(Wei, destroyed in 392 by Later Yan forces, is generally not included by historians among the Sixteen Kingdoms because of its relatively small size and short lifespan.)

Zhai Zhao flees alone to Western Yan.

Gwanggaeto’s military forces see action in 392 against Baekje.

With Gwanggaeto in personal command, Goguryeo attacks Baekje with fifty thousand cavalry, taking ten walled cities along the two countries' mutual border.

Armenia during the reign of Shapur III had been divided between the Roman and Persian empires according to the terms of a peace treaty, but this arrangement has barely survived his reign.

Khosrov III, the Arsacid King of Armenia under Persian suzerainty, has by about 390 grown wary of his subordination to Persia and entered into a treaty with the Roman Emperor Theodosius who in return for this allegiance had deposed Arshak III in Roman Armenia and made Khosrov the king of a united Armenia.

Enraged, Bahram IV takes Khosrov prisoner in 392 and confines him to the Castle of Oblivion, placing his brother Varahran-Shapur upon the Armenian throne.

Khosrov appeals to Theodosius for help but the latter refuses to intervene, as it would constitute a breach of the peace of 384.

The Egyptian hieroglyphic script has been employed since 3100 BCE, but by the fourth century few Egyptians were capable of reading hieroglyphs, and the myth of allegorical hieroglyphs was ascendant.

Monumental use of hieroglyphs ceases in 391 after the closing of all non-Christian temples by Theodosius. (The last known inscription is from Philae, known as the The Graffito of Esmet-Akhom, from 396.)

The seventeen-year-old Valentinian had been found dead in his palace at Vienne on May 15, 392, in circumstances suggestive of murder instigated by Arbogast, whom he had sought to dismiss from the regency of Gaul.

Three months afterward, Arbogast treacherously proclaims as emperor in the West the bureaucrat Eugenius, a sometime professor of rhetoric with close connections to the non-Christian aristocracy of the Senate.

The choice of Eugenius over proclaiming himself offers to Arbogast two strong advantages: Eugenius, a Roman, is more suitable than Arbogast, a Frank, as an emperor; furthermore, the Roman Senate is more likely to support Eugenius than Arbogast.

An admirer of the ancient Roman Republic, Arbogast despises the quarrels between Nicene and Arian Christians; he now sets about restoring the old cults.

Eugenius, after being installed as Western Emperor following the death of the teenaged emperor Valentiian II, changes the imperial administrators.

When Theodosius had left the western half of the empire to Valentinian, he had put his own men in the highest civil offices, to keep a strong grasp on the whole empire.

Eugenius replaces these administrators with others loyal to himself, coming from the senatorial class.

Nicomachus Flavianus the Elder becomes Praetorian Prefect of Italy, his son Nicomachus Flavianus the Younger receives the title of Prefect of Rome, while the new praefectus annonae is Numerius Proiectus.

Eugenius is nominally a Christian, and therefore is reluctant to accept a program of imperial support to Polytheism.

His men, however, persuade Eugenius to use public money to fund 'Pagan' projects, such as the rededication of the Temple of Venus and Rome and the restoration of the Altar of Victory within the Curia (removed by Emperor Gratian).

This religious policy creates tension with Theodosius and …

…the powerful and influential Bishop Ambrose, who leaves his see in Milan when the imperial court of Eugenius arrives.

Theodosius, having returned from Milan to Constantinople and not yet daring to risk another civil war, delays reception of a legation requesting recognition of Arbogast's puppet emperor, Eugenius.

On November 8, 392, he makes his edicts of 391 more stringent by not only reinforcing the prohibition of prayers or sacrifices at non-Christian temples but completely prohibiting the worship of any but the Christian god.

Buyeo Abang, the eldest son of Baekje's fifteenth ruler Chimnyu, had ascended to the throne after the death of Chimnyu’s brother, the sixteenth king Jinsa, whom he is said to have killed.

The Goguryeo offensive infuriates Asin, who subsequently plans a counteroffensive against Gwanggaeto, a plan he is forced to abandon when his invasion force is defeated by Goguryeo 393.

Zhai Zhao tries to start a coup against Murong Yong in 393 and is killed.