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The rise of porcelain industry in northern China and the subsequent emergence of white porcelain production during the Northern dynasties (386–581 CE) played a pivotal role in shaping the historical trajectory of Chinese ceramics. Xing kiln is one of China's earliest and most representative white porcelain kilns. Herein, we investigated 23 porcelain sherds from the Neiqiu Xing kiln site during the late Northern dynasties and the early Sui dynasty (550–600 CE) from the perspective of firing temperature, firing atmosphere, and microstructure using a dilatometer, X‐ray photoelectron spectroscopy, and scanning electron microscopy. The results show that the early Xing porcelains were fired at high firing temperatures exceeding 1200°C with a reducing flame, and the adjustment of temperature promotes the emergence of early white porcelain. Moreover, the higher firing temperature of early Xing porcelain leads to the dominance of a glassy phase within the glaze, and the high bonding strength of the glaze and body caused by the body–glaze interaction layer formed with dense anorthite crystals. Overall, these findings provide valuable insights into the firing technology in the Xing kiln and even in North China during the late sixth century. [ABSTRACT FROM AUTHOR]

As the criterion used by archaeologists for determining early white porcelain is quite ambiguous, the origin of Chinese white porcelain remains a point of disagreement. In this study, we systematically investigate 61 typical Xing porcelains of the late Northern dynasties to the early Sui dynasty (550–600 CE) using spectrophotometer, X‐ray fluorescence (XRF), scanning electron microscopy (SEM), and X‐ray powder diffraction (XRD), and analyze the differences between early white porcelain and celadon of Xing kiln in terms of their whiteness and raw materials characteristic. The results show that early white porcelain is a new type of ware that differs from celadon, which can be distinguished by whiteness, with a whiteness greater than 8% being early white porcelain and a whiteness less than 8% being celadon. It is assumed that the ancient potters created the whiter wares based on celadon by improving the glaze and selecting new raw materials for the body, but the production of this type of ware was short lived and subsequently refined in the Sui dynasty (581–618 CE) owing to the limited improvement in whiteness. [ABSTRACT FROM AUTHOR]

Nano‐heterointerface engineering has been demonstrated to influence interfacial polarization by expanding the interface surface area and constructing a built‐in electric field (BEF), thus regulating electromagnetic (EM) wave absorption. However, the dielectric‐responsive mechanism of the BEF needs further exploration to enhance the comprehensive understanding of interfacial polarization, particularly in terms of quantifying and optimizing the BEF strength. Herein, a “1D expanded 2D structure” carbon matrix is designed, and semiconductor ZnIn2S4 (ZIS) is introduced to construct a carbon/ZIS heterostructure. The cross‐dimensional nano‐heterointerface design increases interface coupling sites by expanding the interface surface area and induces an increase in the Fermi level difference on both sides of the interface to modulate the distribution of interface charges, thereby strengthening the BEF at the interface. The synergistic effect leads to excellent EM absorption performance (minimum reflection coefficient RCmin = −67.4 dB, effective absorption bandwidth EAB = 6.0 GHz) of carbon/ZIS heterostructure. This work introduces a general modification model for enhancing interfacial polarization and inspires the development of new strategies for EM functional materials with unique electronic behaviors through heterointerface engineering. [ABSTRACT FROM AUTHOR]