[9]: 92 According to some scholars including Sujit Mukherjee, Nongda Lairen Pakhangba ruled for 21 years, from 33 to 54 AD.
The list of Meitei kings was recorded in the Cheitharol Kumbaba, which survives in several versions, the most authentic of which is preserved in the Royal Palace of Manipur.
[16] Nongda Lairen Pakhangba subjugated the powers of Sorarel Ariba Ahum, who were the chiefs of three clans, Salai Leishangthem, Luwang and Kha Nganpa.
[27] Some scholars asset that under the administration of Nongda Lairen Pakhangba, his capital was split into four divisions, or panas: Ahallup; Naharup; Laipham; and Khabam.
[17]: 192–193 When Nongda Lairen Pakhangba and his queen consort Laishna were crowned in 33 AD, the ritual song Ougri was sung.
[30][31][32] These recitations of the verses, during the royal coronation of Nongda Lairen Pakhangba in 33 AD, were recorded in the ancient text, Laisrapham.
[17]: 238–239 During the era of Nongda Lairen Pakhangba, a court singer named Leinung Tharuk Asheiba initiated the use of the Pena, a traditional musical instrument.
[38] During the reign of Nongda Lairen Pakhangba, his younger sister Panthoibi [c], established the ametpa loishang, or office of the masseurs to diagnose and treat diseases (especially boils, abscesses, ulcers).
[44][45][46][47][48] According to Anuradha Dutta and Ratna Bhuyan, Nongda Lairen Pakhangba was murdered and his queen Laisana saved their son.
[35]: 16–17 According to superstitious people, Pakhangba was a demigod, appearing divine during the day and human at night.
[28][35] In the Kangla of Imphal, there is an annual Nongda Lairen Pakhangba flag-hoisting ceremony, organised by Nahanong Kanglei Laining Liklam (NKLL).
Ceremonies are performed and the Salai Taret Huiyen Lalong Thang-Ta Lup, giving guard of honour, hoists the flag of Nongda Lairen Pakhangba.