Social hierarchy could change by economic development. Meifeng Zhang (2015) summarizes the phenomenon of iron girl in his article, he thinks that from 1950s to 1970s, the unique world of the “iron girls” established in China and this new term can be seen as a significant step towards gender equality. Iron girls are women who have a masculine image such as a strong body shape, short hair, and dark skin and are able to do heavy physical work in farmland. During this period, the occupations of iron girl transformed from farmland to heavy industry because of the modernization within the societies. With the increasing demand of Industrial construction, government sent women to western countries to study railway engineering or mining. Government use this machine metaphor to make woman feel the concept of gender equality and realize “woman are equal to man’. This concept of an iron girl changes the stereotype that women are born weak and are not as useful as men in contributing to society. The distorted idea of removing gender discrimination received many criticism after this revolution, people realized that there should be some differences between man and woman and existing different roles does not mean discrimination. Haslanger in her article wrote that “woman is regularly and for most part observed or imagined to have certain bodily features presumed to be evidence of a female’s biological role in reproduction”(21). As female is a term of social construction, woman should have certain features of their own and gender equality cannot be based on eliminating female features. This case can demonstrate that gender is socially constructed because social factors such as technology changes woman’s position and consequently increase the stature of gender equality. Although it is not an appropriate way to promote gender equality in modern Chinese community as woman to have certain privileged masculine features, but it is still a significant step for Chinese woman to become more equal. Economic development can not only be shown in technological aspect but can also be shown in working place. With the development of economy, the situation of separation of the private household and public enterprise has changed. Stockman Norman (1994) illustrates the historical change of gender equality by investigating the interrelationships of production and reproduction. The main structure of gender inequalities in late imperial showed that woman had extra household jobs and people followed the system of family and liked to live in a patriarchal society. After that period, society began to separate household and enterprise. All citizens were employed in industries and employer divided the labour according to sex and age. Employers did not seem to be interested with the topic of gender differences, as to them only the quality of industry product mattered. However, with the development of latest infrastructures, the new term danwei (work-unit) appeared in 1990, and government encouraged woman to be a part of labour force, thus stimulating the gender equality. A successful industry would want all the employees to be fully attentive towards the goals of annual production of commodities, so for them woman who gets distracted by family matters and are unable to pay attention to the business are of no use. It seems that gender became less comparable during this time period because both man and woman were treated exactly the same. However, it makes people question that the time is not far when women who disregard their social position would become exactly equal to men. Haslanger in her article defines that “these features of woman marks them within the dominant ideology of society and they ought to occupy certain kinds of social position that are subordinate (21)”. Gender is socially constructed and it should have the category of what female is rather than simply achieving the goal of gender equality in terms of neglecting the differences between woman and man. If woman and man have physical and mental differences but government force women to produce the same qualities of commodities and take care of household issues at the same time, then it could be called as gender inequality. The progress of gender inequalities is complicated, and the situation of gender could get affected by economic factors. Although people can realize the improvement in female situation during 20th century, it is still a long way to go for both Chinese government and citizens to understand the actual meaning of female in social terms.